用微信扫码二维码

分享至好友和朋友圈

WE ARE COMMITTED TO REPORTING THE LATEST FORESTRY ACADEMIC ACHIEVEMENTS

陈太燕, 杨诗金, 张可, 刘柿良, 任波, 陶建军. 成都平原珙桐驯化繁育及栽培研究[J]. 四川林业科技, 2015, 36(3): 18-24. DOI: 10.16779/j.cnki.1003-5508.2015.03.005
引用本文: 陈太燕, 杨诗金, 张可, 刘柿良, 任波, 陶建军. 成都平原珙桐驯化繁育及栽培研究[J]. 四川林业科技, 2015, 36(3): 18-24. DOI: 10.16779/j.cnki.1003-5508.2015.03.005
CHEN Tai-yan, YANG Shi-jin, ZHANG Ke, LIU Shi-liang, REN Bo, TAO Jian-jun. A Study of Domesticated Breeding and Cultivation and Management of Davidia involucrata in Chengdu Plain[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 18-24. DOI: 10.16779/j.cnki.1003-5508.2015.03.005
Citation: CHEN Tai-yan, YANG Shi-jin, ZHANG Ke, LIU Shi-liang, REN Bo, TAO Jian-jun. A Study of Domesticated Breeding and Cultivation and Management of Davidia involucrata in Chengdu Plain[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 18-24. DOI: 10.16779/j.cnki.1003-5508.2015.03.005

成都平原珙桐驯化繁育及栽培研究

A Study of Domesticated Breeding and Cultivation and Management of Davidia involucrata in Chengdu Plain

  • 摘要: 珙桐为我国特有的单型属树种,被列为我国I级重点保护植物,具有极高的观赏、经济和生态价值。但以珙桐为主的阔叶林群落逐渐衰退,局域种群的稳定性不尽相同。本研究根据"近区采种"的原则,对成都平原珙桐生物学特性、繁育、栽培及驯化等方面进行初步探讨。研究表明,1)嫩枝插条在50 mg·kg-1吲哚丁酸处理下,树龄为5~6年的珙桐生根率分别约为70%;树龄在11年~15年的珙桐生根率却在50%以下。不同激素(IBA、NAA、IAA)对嫩枝生根率比较发现,以IBA和NAA处理生根效果较明显,生根率在65%~97%间。与嫩枝扦插比较,硬枝扦插明显生根率低,其生根率最高的基部萌生条下段也只达5.5%。2)嫁接苗株高比实生苗低,地径比实生苗大;嫁接珙桐愈合好,植株健壮。3)不同时期沙藏方式对种子出苗率影响不明显。不同温度条件下沙藏的珙桐种子出苗率除低温沙藏出苗率较低外,其余处理对出苗率无促进作用。4)高压育苗繁殖成活率高达87.6%,尤其在珙桐林区,短期内可提供早开花的珙桐苗木。同时,对珙桐人工种植管理栽培技术从低海拔引种栽培、播种繁育、扦插繁育和嫁接繁育等方面进行了总结,为珙桐的引种繁育及自然资源保护提供科学借鉴。

     

    Abstract: Davidia involucrata Baillon,as a unique monotypic species,is listed as Class I at the national key protected plants,which has highly ornamental,economic and ecological value. In this paper,based on the principle of "Seed Collecting in Near Zone ",investigations were made on the biologic characteristics,breeding,cultivation and domestication of D.involucrata in Chengdu Plain. The results showed that 1) when shoots cuttings were treated by 50 mg·kg-1 indole butyric acid, the rooting rate of 5 to 6 years old dove trees was approximately 70%; the rooting rate of 11 to 15 years old dove trees was 50% or less. Different hormones(IBA,NAA,IAA) were compared on softwood rooting rate. Treatments with IBA and NAA exhibited an obvious rooting rate,their rooting rate was between 65% to 97%. Compared with softwood cuttings,hardwood cuttings' rooting rate was significantly low,at the highest its rate base rooting initiation under paragraph was only 5.5%. 2) The plant height of the grafted seedlings was lower than the seedlings from seeds,and larger in diameter. Overall,grafting seedlings were healed well,and plants were robust. 3) Different sand methods had no obvious effect on seed germination rate. 4) The survival rate of high-pressure nursery was about 87.6%, especially in D.involucrata forest, providing early flowering seedlings in the short term. Meanwhile,the management of D.involucrata cultivation techniques was summarized from a low altitude introduction and cultivation,sowing breeding,breeding and grafting cuttings breeding,etc. It would provide scientific reference for the introduction, breeding and conservation of natural resources of D.involucrata.

     

/

返回文章
返回