2017 Vol. 38 Issue 6
2017 Vol. 38, No. 6
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2017, 34(6): 1-4,16.
doi: 10.16779/j.cnki.1003-5508.2017.06.001
Abstract:
Between November 2013 and March 2016, infrared-triggered camera were installed in 27 different loci in Wolong National Nature Reserve, Sichuan, China. Among them, 10 cameras photographed snow leopards successfully. Based on these 10 loci and MaxEnt model, the snow leopard distribution map was developed in Wolong. The area of available habitat was 345 km2, covering 12% of the total area. 279 km2 (81%) of the suitable habitat were located in the core area, 15% in the buffer area, and only 5% in the experimental area. The main factors influencing the habitat selection by snow leopards include the vegetation form, the average annual temperature and aspect of the habitat. Snow leopards in Wolong preferred the sunny slope at an annual temperature of -8℃~0℃. The favorite landcover type is meadow. The studies provided the basic data for the protection of suitable habitats.
Between November 2013 and March 2016, infrared-triggered camera were installed in 27 different loci in Wolong National Nature Reserve, Sichuan, China. Among them, 10 cameras photographed snow leopards successfully. Based on these 10 loci and MaxEnt model, the snow leopard distribution map was developed in Wolong. The area of available habitat was 345 km2, covering 12% of the total area. 279 km2 (81%) of the suitable habitat were located in the core area, 15% in the buffer area, and only 5% in the experimental area. The main factors influencing the habitat selection by snow leopards include the vegetation form, the average annual temperature and aspect of the habitat. Snow leopards in Wolong preferred the sunny slope at an annual temperature of -8℃~0℃. The favorite landcover type is meadow. The studies provided the basic data for the protection of suitable habitats.
2017, 34(6): 5-8.
doi: 10.16779/j.cnki.1003-5508.2017.06.002
Abstract:
By taking 30 half-sib progenies from plus trees of Phoebe zhennan as studying objects, the seedling height, basal diameter and the length of new shoot of 1.5-year-old seedlings were investigated and studied in order to provide a reference for the genetic modification and the selection of improved variety. The results indicated that there were highly significant difference between families in the three traits of seedling height, basal diameter and the length of new shoot, also the three traits were highly under genetic control and significantly correlated among them. Considering the seedling height and basal diameter, 6 half-sib progenies which seedling grew quickly were preliminaryly screened out, and the Gusi no.2 was the best.
By taking 30 half-sib progenies from plus trees of Phoebe zhennan as studying objects, the seedling height, basal diameter and the length of new shoot of 1.5-year-old seedlings were investigated and studied in order to provide a reference for the genetic modification and the selection of improved variety. The results indicated that there were highly significant difference between families in the three traits of seedling height, basal diameter and the length of new shoot, also the three traits were highly under genetic control and significantly correlated among them. Considering the seedling height and basal diameter, 6 half-sib progenies which seedling grew quickly were preliminaryly screened out, and the Gusi no.2 was the best.
2017, 34(6): 9-12.
doi: 10.16779/j.cnki.1003-5508.2017.06.003
Abstract:
The sex pheromone was extracted from sex pheromone glands of virgin female moths of P. orienta by n-hexane. The sensitive reaction of male moths antenna to the crude sex pheromon was detected by GC-EAD and the components of the sex gland extracts that consistently elicited antennal responses were identified by GC-MS. The results indicated that male moths antenna had sensitive reaction to two components of the extracts, which were Z-9-Octadacenal and Z-9-Octadacenol. In field trials, traps baited with either Z-9-Octadacenal or Z-9-Octadacenol alone caught a similar amount of male moths, which meant that Z-9-Octadacenal and Z-9-Octadacenol were the main components of the sex pheromone of Parocneria orienta. the combination of Z-9-Octadacenal and Z-9-Octadacenol in 1:9 or 1:9 ratio caught more males than single component traps.
The sex pheromone was extracted from sex pheromone glands of virgin female moths of P. orienta by n-hexane. The sensitive reaction of male moths antenna to the crude sex pheromon was detected by GC-EAD and the components of the sex gland extracts that consistently elicited antennal responses were identified by GC-MS. The results indicated that male moths antenna had sensitive reaction to two components of the extracts, which were Z-9-Octadacenal and Z-9-Octadacenol. In field trials, traps baited with either Z-9-Octadacenal or Z-9-Octadacenol alone caught a similar amount of male moths, which meant that Z-9-Octadacenal and Z-9-Octadacenol were the main components of the sex pheromone of Parocneria orienta. the combination of Z-9-Octadacenal and Z-9-Octadacenol in 1:9 or 1:9 ratio caught more males than single component traps.
2017, 34(6): 13-16.
doi: 10.16779/j.cnki.1003-5508.2017.06.004
Abstract:
Camellia chekiangoleosa Hu.is an endemic species to China and is used as one of the major woody oil crops.Nursery-grown plants by vegetative propagation could maintain the excellent traits of the original plant. In this paper, the progresses of vegetative propagation in C. chekiangoleosa were analyzed and summarized, which could offer references for the corresponding industry.
Camellia chekiangoleosa Hu.is an endemic species to China and is used as one of the major woody oil crops.Nursery-grown plants by vegetative propagation could maintain the excellent traits of the original plant. In this paper, the progresses of vegetative propagation in C. chekiangoleosa were analyzed and summarized, which could offer references for the corresponding industry.
2017, 34(6): 17-19,93.
doi: 10.16779/j.cnki.1003-5508.2017.06.005
Abstract:
Waterlogging could seriously affect the normal growth and development of plants,which had caused great loss to the production of walnut.It was very important to understand the physiological changes of trees under the stress of water and the mechanism of stress response.The researches were summarized on changes of morphological structure and physiological indexes of walnut trees and under water stress at home and abroad, to explore the mechanism of resistance. And its future application was prospected.
Waterlogging could seriously affect the normal growth and development of plants,which had caused great loss to the production of walnut.It was very important to understand the physiological changes of trees under the stress of water and the mechanism of stress response.The researches were summarized on changes of morphological structure and physiological indexes of walnut trees and under water stress at home and abroad, to explore the mechanism of resistance. And its future application was prospected.
2017, 34(6): 20-26.
doi: 10.16779/j.cnki.1003-5508.2017.06.006
Abstract:
Eucommia ulmoides forest land was taken as an example,the effects of different fertilization treatments on the growth of Bletilla striata under forest cultivation were studied by using incomplete fertilization design. The results showed that (1) the fertilizer could promote the growth of Bletilla striata under forest cultivation.The seedlings grew the best with the height of 13.67 cm and the diameter of 0.44 cm when nitrogen phosphorus and potassium (N:P2O5:K2O) fertilizer was 30 kg per 0.067 hectare and fertilization on plant height, ground diameter growth showed significant difference (P<0.01); (2) The effects of fertilization were studied on the growth of Bletilla striata tubers, with the increase of fertilization amount, the tuber length, tuber width, tuber number and tuber weight of Bletilla striata increased gradually; When the nitrogen phosphorus and potassium (N:P2O5:K2O) fertilizer was 30 kg per 0.067 hectare, the tuber grew the best, with its length 40.67% higher than that of the control (CK), width 91.27% higher tuber number 79.85% higher, tuber weight 298.90% higher and the highest yield of Bletilla striata; Fertilization on tuber length, width, number and tuber weight growth showed significant difference (P<0.01); (3) It was suggested that organic fertilizer should be applied before planting in Bletilla striata under forest cultivation, and nitrogen fertilizer should be applied in the fast growing stage. Nitrogen, phosphorus and potassium compound fertilizer should be applied in the flowering and tuber swelling stages to promote the growth and development of Bletilla striata tubers.
Eucommia ulmoides forest land was taken as an example,the effects of different fertilization treatments on the growth of Bletilla striata under forest cultivation were studied by using incomplete fertilization design. The results showed that (1) the fertilizer could promote the growth of Bletilla striata under forest cultivation.The seedlings grew the best with the height of 13.67 cm and the diameter of 0.44 cm when nitrogen phosphorus and potassium (N:P2O5:K2O) fertilizer was 30 kg per 0.067 hectare and fertilization on plant height, ground diameter growth showed significant difference (P<0.01); (2) The effects of fertilization were studied on the growth of Bletilla striata tubers, with the increase of fertilization amount, the tuber length, tuber width, tuber number and tuber weight of Bletilla striata increased gradually; When the nitrogen phosphorus and potassium (N:P2O5:K2O) fertilizer was 30 kg per 0.067 hectare, the tuber grew the best, with its length 40.67% higher than that of the control (CK), width 91.27% higher tuber number 79.85% higher, tuber weight 298.90% higher and the highest yield of Bletilla striata; Fertilization on tuber length, width, number and tuber weight growth showed significant difference (P<0.01); (3) It was suggested that organic fertilizer should be applied before planting in Bletilla striata under forest cultivation, and nitrogen fertilizer should be applied in the fast growing stage. Nitrogen, phosphorus and potassium compound fertilizer should be applied in the flowering and tuber swelling stages to promote the growth and development of Bletilla striata tubers.
2017, 34(6): 27-30.
doi: 10.16779/j.cnki.1003-5508.2017.06.007
Abstract:
In order to select a suitable walnut rootstock for Sichuan hilly regions, this study used 10 type of 9 species walnut rootstocks were used for the study of variety charaeteristics and the graft compatibility. The result showed that the emerging time of different walnut rootstocks was similar. The emergence rate of Juglans sigillata was the highest and Pterocarrya stenoptera was the lowest. The leaf index of P. stenoptera was maximum and the leaf index of kazi walnuts and thumb walnut of gulin were minimum. The graft compatibility of J. nigra was the highest when Shuoxing walnut was used as scion. And the graft compatibility of J. sigllata was the highest when Naingqing walnut was used as scion.
In order to select a suitable walnut rootstock for Sichuan hilly regions, this study used 10 type of 9 species walnut rootstocks were used for the study of variety charaeteristics and the graft compatibility. The result showed that the emerging time of different walnut rootstocks was similar. The emergence rate of Juglans sigillata was the highest and Pterocarrya stenoptera was the lowest. The leaf index of P. stenoptera was maximum and the leaf index of kazi walnuts and thumb walnut of gulin were minimum. The graft compatibility of J. nigra was the highest when Shuoxing walnut was used as scion. And the graft compatibility of J. sigllata was the highest when Naingqing walnut was used as scion.
2017, 34(6): 31-33.
doi: 10.16779/j.cnki.1003-5508.2017.06.008
Abstract:
Yellow peony (Paeonia delavayi var. lutea) was used as a test material by the detections of seed reproduction, shoot propagation and cultivation experiments in Xiaozhifang village, Zhongba township, Renhe district,Panzhihua City.The results showed as follows:the germination rate of mature seeds sowing right after the fall harvest was higher than that of sand reservoir sowing in spring. The branch-cutting propagation effect was poor. It was suitable for yellow peony to plant in the area of low canopy density, good water permeability under forest, such as under the walnut forest, park green space in Panxi area to improve forest benefit and farmers' income, enrich city and landscape plant varieties.
Yellow peony (Paeonia delavayi var. lutea) was used as a test material by the detections of seed reproduction, shoot propagation and cultivation experiments in Xiaozhifang village, Zhongba township, Renhe district,Panzhihua City.The results showed as follows:the germination rate of mature seeds sowing right after the fall harvest was higher than that of sand reservoir sowing in spring. The branch-cutting propagation effect was poor. It was suitable for yellow peony to plant in the area of low canopy density, good water permeability under forest, such as under the walnut forest, park green space in Panxi area to improve forest benefit and farmers' income, enrich city and landscape plant varieties.
2017, 34(6): 34-39.
doi: 10.16779/j.cnki.1003-5508.2017.06.009
Abstract:
In order to study the influence of different temperature and hormone on the germination of the seeds in different area of the White Dragon River,two exogenous hormones, GA and PEG were used in this study.The germination experiment of the seed germination under different temperature gradient indicated that (1) the GA was more advantageous to the seed germination;(2) seed activity from Zhouqu was better than that of Dangchang seeds;(3) under the same temperature,as the hormone concentration increases, the germination rate showed a trend of decrease after increase first.With the increase of temperature,under the same concentration,seed germination rate showed increasing trend;Under the same temperature germination index and germination potential changes were consistent;(4) with the increase of hormone concentration and temperature,average germination time were reduced, and high concentration and high temperature could shorten seed germination time.
In order to study the influence of different temperature and hormone on the germination of the seeds in different area of the White Dragon River,two exogenous hormones, GA and PEG were used in this study.The germination experiment of the seed germination under different temperature gradient indicated that (1) the GA was more advantageous to the seed germination;(2) seed activity from Zhouqu was better than that of Dangchang seeds;(3) under the same temperature,as the hormone concentration increases, the germination rate showed a trend of decrease after increase first.With the increase of temperature,under the same concentration,seed germination rate showed increasing trend;Under the same temperature germination index and germination potential changes were consistent;(4) with the increase of hormone concentration and temperature,average germination time were reduced, and high concentration and high temperature could shorten seed germination time.
2017, 34(6): 40-44.
doi: 10.16779/j.cnki.1003-5508.2017.06.010
Abstract:
To study the organogenesis approaches in tissue culture of stem tips of Benihoppe strawberry (Fragaria ananassa Duch.),stem tips were used as explants for tissue culture,aiming to observe the morphological and anatomical changes during organic regeneration.Results showed that the regenerative bud primodium in vitro of Benihoppe Strawberry (F. ananassa Duch.) derived from the parenchyma cells in epidermis on the morphologic apex of stem tips,so it originated in exogenous way;Parenchyma cells in epidermis differentiated to form bud primordium,then the leaf primordium would be differentiated from parenchyma cells in epidermis near it;the bud primordium and leaf primordium grew together to form adventitious shoots;Organogenesis type was the way for the bud primordium to regenerate.The tissue of adventitious shoots base was induced by hormone, which would cause the differentiation of root primordium in cambium, the epidermic cells of adventitious shoots base could form root primordium too.Therefore, the way that adventitious roots originated could be exogenous or endogenous, but the adventitious roots were all the induced root primordia. At last, the conducting tissue in adventitious shoots and roots connected the whole tissue culture seedling into a complete plant.
To study the organogenesis approaches in tissue culture of stem tips of Benihoppe strawberry (Fragaria ananassa Duch.),stem tips were used as explants for tissue culture,aiming to observe the morphological and anatomical changes during organic regeneration.Results showed that the regenerative bud primodium in vitro of Benihoppe Strawberry (F. ananassa Duch.) derived from the parenchyma cells in epidermis on the morphologic apex of stem tips,so it originated in exogenous way;Parenchyma cells in epidermis differentiated to form bud primordium,then the leaf primordium would be differentiated from parenchyma cells in epidermis near it;the bud primordium and leaf primordium grew together to form adventitious shoots;Organogenesis type was the way for the bud primordium to regenerate.The tissue of adventitious shoots base was induced by hormone, which would cause the differentiation of root primordium in cambium, the epidermic cells of adventitious shoots base could form root primordium too.Therefore, the way that adventitious roots originated could be exogenous or endogenous, but the adventitious roots were all the induced root primordia. At last, the conducting tissue in adventitious shoots and roots connected the whole tissue culture seedling into a complete plant.
2017, 34(6): 45-47,104.
doi: 10.16779/j.cnki.1003-5508.2017.06.011
Abstract:
The test was conducted under artificial settings at low temperatures, 4 treatments were set as D1(CK),D2(-5℃),D3(-15℃),D4(-25℃), when the duration of low temperature were set as 6 treatment:3, 6, 9, 12, 15, 18 days, studies were made of changes of protective enzymes and their electrical conductivity in Prunus cistena excised shoots. The result showed that:SOD activity rose with the extension of the low temperature duration, D2 treatment was 25.60% higher than that of control with significant difference at the eighteenth day; With the duration of low temperature prolonged, POD activity first increased and then decreased, D2 showed no significant difference to control,and D3 and D4 were significantly higher than that of control; Conductivity of treatment D4 was always at the highest value during 3 to 12 days, D3 was highest during 15 to 18 days, all low temperature treatments were significantly higher than that of control. Comprehensive analysis suggested that continuous low temperature would make SOD and POD activities and conductivity of in vitro branch increase significantly.
The test was conducted under artificial settings at low temperatures, 4 treatments were set as D1(CK),D2(-5℃),D3(-15℃),D4(-25℃), when the duration of low temperature were set as 6 treatment:3, 6, 9, 12, 15, 18 days, studies were made of changes of protective enzymes and their electrical conductivity in Prunus cistena excised shoots. The result showed that:SOD activity rose with the extension of the low temperature duration, D2 treatment was 25.60% higher than that of control with significant difference at the eighteenth day; With the duration of low temperature prolonged, POD activity first increased and then decreased, D2 showed no significant difference to control,and D3 and D4 were significantly higher than that of control; Conductivity of treatment D4 was always at the highest value during 3 to 12 days, D3 was highest during 15 to 18 days, all low temperature treatments were significantly higher than that of control. Comprehensive analysis suggested that continuous low temperature would make SOD and POD activities and conductivity of in vitro branch increase significantly.
2017, 34(6): 48-50.
doi: 10.16779/j.cnki.1003-5508.2017.06.012
Abstract:
The influence of 5 kinds of substrates on 1-year-old Schima wallichii nourishmeat-bag seedlings was investigated by height and diameter growth.Results showed that the seedling height and diameter growth were significantly different among different treatments, seedling height and diameter growth were the best in treatments C (bagasse sheep manure=2:1), and the worst were E, i.e. control. The survey results of monthly growth showed that from the beginning of the fifth month (February 2016), the seedling height and diameter grew the best in treatment C (bagasse:sheep manure=2:1) and the worst in treatment E.
The influence of 5 kinds of substrates on 1-year-old Schima wallichii nourishmeat-bag seedlings was investigated by height and diameter growth.Results showed that the seedling height and diameter growth were significantly different among different treatments, seedling height and diameter growth were the best in treatments C (bagasse sheep manure=2:1), and the worst were E, i.e. control. The survey results of monthly growth showed that from the beginning of the fifth month (February 2016), the seedling height and diameter grew the best in treatment C (bagasse:sheep manure=2:1) and the worst in treatment E.
2017, 34(6): 51-54.
doi: 10.16779/j.cnki.1003-5508.2017.06.013
Abstract:
Taking the ripe seeds that removed from the inflated pods as explant,experiments were conducted on this tissue culture.The results showed that the best inductive medium for explant culture was an improved fromula listed as follows:MS+0.2 mg·L-16-BA+0.2 mg·L-1NAA,and the germination rate could be generally up to 90%~100%;The best enriched medium was an improved formula listed as follows:MS+2.0 mg·L-16-BA+0.3 mg·L-1NAA,and the propagation coefficient was 3.4;The best rooting medium was an improved formula of banana puree substrate listed as follows:MS+0.2 mg·L-1NAA+1 mg·L-1AC+50 g·L-1,and the rate of rooting was 95.6%.The growth substrate was a combination of humus:perlite:coconut hust:fluvial sand=5:1:2:2,which was the best transplanting substrate for Bletilla striata,and the survival rate of the transplanting reached 97%.
Taking the ripe seeds that removed from the inflated pods as explant,experiments were conducted on this tissue culture.The results showed that the best inductive medium for explant culture was an improved fromula listed as follows:MS+0.2 mg·L-16-BA+0.2 mg·L-1NAA,and the germination rate could be generally up to 90%~100%;The best enriched medium was an improved formula listed as follows:MS+2.0 mg·L-16-BA+0.3 mg·L-1NAA,and the propagation coefficient was 3.4;The best rooting medium was an improved formula of banana puree substrate listed as follows:MS+0.2 mg·L-1NAA+1 mg·L-1AC+50 g·L-1,and the rate of rooting was 95.6%.The growth substrate was a combination of humus:perlite:coconut hust:fluvial sand=5:1:2:2,which was the best transplanting substrate for Bletilla striata,and the survival rate of the transplanting reached 97%.
2017, 34(6): 55-58.
doi: 10.16779/j.cnki.1003-5508.2017.06.014
Abstract:
C. yunnanensis is an important species of Genus Corylus in southwest China. In this paper, nine SSR markers were successfully characterized and were used to analyze the population genetic diversity and structure of C. yunnanensis, showing a moderate degree of genetic diversity and differentiation. And all these established the foundation of genetic improvement in C. yunnanensis, and helped to effectively preserve and utilize the germplasm resources of genus Corylus.
C. yunnanensis is an important species of Genus Corylus in southwest China. In this paper, nine SSR markers were successfully characterized and were used to analyze the population genetic diversity and structure of C. yunnanensis, showing a moderate degree of genetic diversity and differentiation. And all these established the foundation of genetic improvement in C. yunnanensis, and helped to effectively preserve and utilize the germplasm resources of genus Corylus.
A Study of Changes of Soil Chemical Properties of Sandy Land in Rangtang County in Northwest Sichuan
2017, 34(6): 59-63,106.
doi: 10.16779/j.cnki.1003-5508.2017.06.015
Abstract:
The chemical properties changes of soil were studied listed as follows:control land, exposed sandy soil, sandy farmland and fixed sandy land in Rangtang County, by the way of spatial sequence instead of the time series. The results showed that:1) Under 0 cm~20 cm and 20 cm~40 cm soil layer, the pH value increased with the increasing of desertification degree; organic matter, total N, the hydrolysis of N,and total P content gradually reduced; 2) Among the same sandy land type of different soil layer, the pH values were not significantly different.Except hydrolysis N of the control soil, organic matter, total N and hydrolysis N, total P content in 0 cm~20 cm soil layer were equal to (approximately equal to) or greater than that in 20 cm~40 cm soil. 3) In different types of sandy soil, no significant change of total K content in the upper and lower soli were found, available K and P content showed as:control land > sandy farmland > expose sandy soil and fixed sandy land.
The chemical properties changes of soil were studied listed as follows:control land, exposed sandy soil, sandy farmland and fixed sandy land in Rangtang County, by the way of spatial sequence instead of the time series. The results showed that:1) Under 0 cm~20 cm and 20 cm~40 cm soil layer, the pH value increased with the increasing of desertification degree; organic matter, total N, the hydrolysis of N,and total P content gradually reduced; 2) Among the same sandy land type of different soil layer, the pH values were not significantly different.Except hydrolysis N of the control soil, organic matter, total N and hydrolysis N, total P content in 0 cm~20 cm soil layer were equal to (approximately equal to) or greater than that in 20 cm~40 cm soil. 3) In different types of sandy soil, no significant change of total K content in the upper and lower soli were found, available K and P content showed as:control land > sandy farmland > expose sandy soil and fixed sandy land.
2017, 34(6): 64-68,75.
doi: 10.16779/j.cnki.1003-5508.2017.06.016
Abstract:
The influencing factors of grassland desertification in Northwest Sichuan were analyzed by the graphic overlay method of superposition climate map, vegetation map and desertification land distribution map,and the specific range of desert area was determined in Northwest Sichuan Plateaus. On this basis, the sandy areas in Northwest Sichuan Plateau were divided into 3 management zones with geology and geomorphology as the dominant factors in combination with the distribution of desertification land. The first management zone was Seda-Shiqu hilly plateau desertification area. The second was Ruoergai and Hongyuan flat plateau desertification zone. The last was Litang and Batang mountain primary desertification zone.The strategy of desertification prevention and control measures was proposed according to the characteristics of desertification. This prevention and control measures were in the hope of providing scientific reference for the smooth implementation of desertification control projects in Northwest Sichuan.
The influencing factors of grassland desertification in Northwest Sichuan were analyzed by the graphic overlay method of superposition climate map, vegetation map and desertification land distribution map,and the specific range of desert area was determined in Northwest Sichuan Plateaus. On this basis, the sandy areas in Northwest Sichuan Plateau were divided into 3 management zones with geology and geomorphology as the dominant factors in combination with the distribution of desertification land. The first management zone was Seda-Shiqu hilly plateau desertification area. The second was Ruoergai and Hongyuan flat plateau desertification zone. The last was Litang and Batang mountain primary desertification zone.The strategy of desertification prevention and control measures was proposed according to the characteristics of desertification. This prevention and control measures were in the hope of providing scientific reference for the smooth implementation of desertification control projects in Northwest Sichuan.
2017, 34(6): 69-71,109.
doi: 10.16779/j.cnki.1003-5508.2017.06.017
Abstract:
There were multi-resources of Cinnamomum longepaniculatum in Yibin county,but the development of related industry lagged behind.Analysis was made of the advantage, weaknesses, opportunities and threats of camphor oil industry in Yibin County.In meartime, development countermeasures were put forword under the new situation to provide a useful reference for the healthy and sustainable development of camphor oil industry in Yibin County.
There were multi-resources of Cinnamomum longepaniculatum in Yibin county,but the development of related industry lagged behind.Analysis was made of the advantage, weaknesses, opportunities and threats of camphor oil industry in Yibin County.In meartime, development countermeasures were put forword under the new situation to provide a useful reference for the healthy and sustainable development of camphor oil industry in Yibin County.
2017, 34(6): 72-75.
doi: 10.16779/j.cnki.1003-5508.2017.06.018
Abstract:
People in the Zhuanjinglou village,Wolong Town had been exploring the new model of poverty alleviation called "ecological poverty alleviation+industry development".Based on ecological protection,ecological poverty alleviation would promote the industry development,and arouse people's enthusiasm for ecological protection."The view of beautiful scenery is the gold and silver mines" would keep people to move forward,and get the goal for ecological poverty alleviation and industry development.
People in the Zhuanjinglou village,Wolong Town had been exploring the new model of poverty alleviation called "ecological poverty alleviation+industry development".Based on ecological protection,ecological poverty alleviation would promote the industry development,and arouse people's enthusiasm for ecological protection."The view of beautiful scenery is the gold and silver mines" would keep people to move forward,and get the goal for ecological poverty alleviation and industry development.
2017, 34(6): 76-78.
doi: 10.16779/j.cnki.1003-5508.2017.06.019
Abstract:
Exocentrus beijingensis Chen was a stem-boring insect pest mainly attacking many trees,such as Robinia pseudoacacia Malus pumila and Malus spectabilis. It was first founded in Anding District, Dingxi City, Gansu Province in 2008 and occured one generation for a year.It mainly harmed the branches of R. pseudoacacia which could threaten the afforestation results of Gansu Province. The result of pest risk analysis showed that the R value of E. Beijingensis was 1.77 and was a moderate devastating forest pest in Gansu Province.
Exocentrus beijingensis Chen was a stem-boring insect pest mainly attacking many trees,such as Robinia pseudoacacia Malus pumila and Malus spectabilis. It was first founded in Anding District, Dingxi City, Gansu Province in 2008 and occured one generation for a year.It mainly harmed the branches of R. pseudoacacia which could threaten the afforestation results of Gansu Province. The result of pest risk analysis showed that the R value of E. Beijingensis was 1.77 and was a moderate devastating forest pest in Gansu Province.
2017, 34(6): 79-83.
doi: 10.16779/j.cnki.1003-5508.2017.06.020
Abstract:
The rare and endangered Acer pentaphyllum trees were only distributed in the arid valley area of the upper and middle reaches of the Yalong river, and now they were found in Yajiang, Jiulong, Kangding and Muli counties of Sichuan province. In this paper, investigation and analysis were made of the species diversity and niche characteristics of Acer pentaphyllum community in each distribution location. The results showed that (1) because the Acer pentaphyllum community was located in the Yalong river arid valley area, the species diversity of community was not high. (2) The niche breadth of the population of Acer pentaphyllum was large, but the niche overlap with other species was not high, indicating that it was a specialization of the arid valley region. (3) The niche overlap among other species in the community was generally high, showing that other invasive species were disorderly, the level of niche differentiation was low, and the competition among species was fierce. It could be seen that the cause for the danger of Acer pentaphyllum was not from the direct competition of other species, but more probably due to the unique biological characteristics of its niche specialization.
The rare and endangered Acer pentaphyllum trees were only distributed in the arid valley area of the upper and middle reaches of the Yalong river, and now they were found in Yajiang, Jiulong, Kangding and Muli counties of Sichuan province. In this paper, investigation and analysis were made of the species diversity and niche characteristics of Acer pentaphyllum community in each distribution location. The results showed that (1) because the Acer pentaphyllum community was located in the Yalong river arid valley area, the species diversity of community was not high. (2) The niche breadth of the population of Acer pentaphyllum was large, but the niche overlap with other species was not high, indicating that it was a specialization of the arid valley region. (3) The niche overlap among other species in the community was generally high, showing that other invasive species were disorderly, the level of niche differentiation was low, and the competition among species was fierce. It could be seen that the cause for the danger of Acer pentaphyllum was not from the direct competition of other species, but more probably due to the unique biological characteristics of its niche specialization.
2017, 34(6): 84-88.
doi: 10.16779/j.cnki.1003-5508.2017.06.021
Abstract:
In this study, vegetation types and natural succession of phosphate wasted quarry in northwest of the Sichuan Basin were researched by field investigation. The result showed that there were 46 species living in wasteland, belonging to 20 families and 37 genera, Asteraceae (12 species) and Gramineae(9 species) plants were the most. Natural succession of phosphate wasted quarry could be summarized in four stages:bareland→ grassland →brush and grass land →brushland. In early period of succession (waste time was below 10 years), Gramineae and Asteraceae plants were main vegetation comnnities in wasteland, which played an important role as pioneers.Stable grass and brush communities were found in the middle period of succession (waste time from 10 to 20 years) and a large number of brushes were formed in the late period of succession(waste time from 20 to 30 years). Diversity of vegetation in wasteland was increasing with the process of succession, diversity of grass vegetation was relatively stable during the period of succession and brush vegetation had a significant increment. It was also found that there was a similar trend between natural succession of phosphate wasted quarry and other kinds of wasteland, which proved that early natural succession were homologous in different kinds of wasteland.
In this study, vegetation types and natural succession of phosphate wasted quarry in northwest of the Sichuan Basin were researched by field investigation. The result showed that there were 46 species living in wasteland, belonging to 20 families and 37 genera, Asteraceae (12 species) and Gramineae(9 species) plants were the most. Natural succession of phosphate wasted quarry could be summarized in four stages:bareland→ grassland →brush and grass land →brushland. In early period of succession (waste time was below 10 years), Gramineae and Asteraceae plants were main vegetation comnnities in wasteland, which played an important role as pioneers.Stable grass and brush communities were found in the middle period of succession (waste time from 10 to 20 years) and a large number of brushes were formed in the late period of succession(waste time from 20 to 30 years). Diversity of vegetation in wasteland was increasing with the process of succession, diversity of grass vegetation was relatively stable during the period of succession and brush vegetation had a significant increment. It was also found that there was a similar trend between natural succession of phosphate wasted quarry and other kinds of wasteland, which proved that early natural succession were homologous in different kinds of wasteland.
2017, 34(6): 89-93.
doi: 10.16779/j.cnki.1003-5508.2017.06.022
Abstract:
The genus Rhododendron resources were rich in the Qionglai mountains. investigations were made of species, habitats and concrete distribution of rhododendrons by conducting surveys, collecting samples and photos. A total of 63 species belonging to 3 subgenus, 4 sections and 11 subsections were observed and the altitudes ranged from 1 230 m to 4 179 m. Most rhododendron species grew together in their typical habitats whereas a few species occurred fragmentally. In this study, plenty of specimens, and photos which could show characters of rhododendrons were collected to provide basic materials for further researches.
The genus Rhododendron resources were rich in the Qionglai mountains. investigations were made of species, habitats and concrete distribution of rhododendrons by conducting surveys, collecting samples and photos. A total of 63 species belonging to 3 subgenus, 4 sections and 11 subsections were observed and the altitudes ranged from 1 230 m to 4 179 m. Most rhododendron species grew together in their typical habitats whereas a few species occurred fragmentally. In this study, plenty of specimens, and photos which could show characters of rhododendrons were collected to provide basic materials for further researches.
2017, 34(6): 94-96.
doi: 10.16779/j.cnki.1003-5508.2017.06.023
Abstract:
Tree pruning was an important way to improve the yield and quality. By comparing the results of pruning, the pruning time and methods, pruning measures were put forward. There were some risks in economy. But in the long term, integrated technology management measures must be strengthened, including soil, fertilizer, water and pest control and so on.
Tree pruning was an important way to improve the yield and quality. By comparing the results of pruning, the pruning time and methods, pruning measures were put forward. There were some risks in economy. But in the long term, integrated technology management measures must be strengthened, including soil, fertilizer, water and pest control and so on.
2017, 34(6): 97-100.
doi: 10.16779/j.cnki.1003-5508.2017.06.024
Abstract:
In this paper,a brief description is given of bumper crop cultivation techniques of Luding prickly ash, inclusive of establishing the orchard, transplanting, maintenance and management, pruning, pest control, harvesting and drying to provide technical guidance for Luding prickly ash standardization management production, in order to improve the yield and quality of Luding prickly ash, increase the competitiveness and local farmers' income, and provide theoretical support of industry sustainable development for prickly ash industry.
In this paper,a brief description is given of bumper crop cultivation techniques of Luding prickly ash, inclusive of establishing the orchard, transplanting, maintenance and management, pruning, pest control, harvesting and drying to provide technical guidance for Luding prickly ash standardization management production, in order to improve the yield and quality of Luding prickly ash, increase the competitiveness and local farmers' income, and provide theoretical support of industry sustainable development for prickly ash industry.
2017, 34(6): 101-104.
doi: 10.16779/j.cnki.1003-5508.2017.06.025
Abstract:
In this paper,a brief description is made of the bumper crop cultivation techniques program of Ludingred cherry, including establishing the orchard, transplanting, soil fertilizer and water management, shaping and pruning, flower and fruit management,harvesting and pest control,aiming to provide technical guidance for Luding red cherry standardization management production,aiming to promote local farmers' income, to provide theoretical support of industry sustainable development for red cherry industry.
In this paper,a brief description is made of the bumper crop cultivation techniques program of Ludingred cherry, including establishing the orchard, transplanting, soil fertilizer and water management, shaping and pruning, flower and fruit management,harvesting and pest control,aiming to provide technical guidance for Luding red cherry standardization management production,aiming to promote local farmers' income, to provide theoretical support of industry sustainable development for red cherry industry.
2017, 34(6): 105-106.
doi: 10.16779/j.cnki.1003-5508.2017.06.026
Abstract:
‘Xianghe 1’ was a new native cultivar of walnut trees derived from Xiangcheng County.The tree grew stronger, the male and female flowers were synchronized. The nut was oval with the smooth surface. The kernel was full and yellowish-white. The average single fruit weighed 14.5 g. The shell thickness was 0.97 mm, and kernel percentage was 61.6%.The total fat content was 62.9% and total protein content was 21.2%. It was approved by the tree cultivar registration committee in Sichuan province in April 2014.
‘Xianghe 1’ was a new native cultivar of walnut trees derived from Xiangcheng County.The tree grew stronger, the male and female flowers were synchronized. The nut was oval with the smooth surface. The kernel was full and yellowish-white. The average single fruit weighed 14.5 g. The shell thickness was 0.97 mm, and kernel percentage was 61.6%.The total fat content was 62.9% and total protein content was 21.2%. It was approved by the tree cultivar registration committee in Sichuan province in April 2014.
2017, 34(6): 107-109.
doi: 10.16779/j.cnki.1003-5508.2017.06.027
Abstract:
