Abstract: Bambusa rigida in Changning County was taken as the research object,the clear cutting belts were set in lengths of 60 m and widths of 3 m,6 m and 9 m.in the sample plots of Longtou Town and Zhuhai Town.The reserved zone was set between 3 m~6 m and 6 m~9 m cutting belt.The retention band had a retention bandwidth of 6 m;in addition,a 6×60 control zone was placed near the sample plot.After one year of mechanical strip clearing,the growth status,significant characteristics,and biomass (aboveground) were analyzed through investigation and data processing.The results showed that (1) the shoots were found in both plots,and the order of sprouting area size was 9m cutting belt > 6 m cutting belt > 3 m cutting belt.In Longtou town,the amount of shoots in each cutting belt and retaining belt was significantly higher than that in the control belt,and the maximum was 6 m~9 m retention belt,reaching 4 976±97 plants hm^-2.In Zhuhai Town,the shoot number in the 3 m cutting belt,3 m~6 m retention zone and the 6 m~9 m zone were higher than that of the control zone,and the number of shoots in the 6 m~9 m retention zone was the highest,reaching 11 583 plants·hm^-2.(2) One-way analysis of variance (ANOVA) and multiple comparisons showed that the average breast diameter of bamboo shoots in Longtou Town and Zhuhai Town were not significantly different between the 6 m belt and the 9m belt (p>0.05),but the difference between each other belt were significant (p<0.05);the average height of bamboo shoots in Longtou town was not significantly different between the 3m belt and the 6m belt,or the 6m belt and the 9m belt (p>0.05),and the differences between the other belts were significant (p>0.05),the average height of bamboo shoots in Zhuhai Town was not significantly different from that of 6m harvesting belt and 9m harvesting belt (p>0.05),and the differences between the other belts were significant (p<0.05).(3) According to the exponential regression model and other fittings on the DBH and biomass,it could be calculated that after the strip-shaped clear cutting test,the yield of the 3 m~6 m retention zone and 6 m~9 m retention in Longtou town was 92.76% and 175.21% higher than that of the control.The yield of the 3 m~6 m retention zone and the 6 m~9 m retention zone in Zhuhai Town was 111.89% and 161.58% higher than that of the control.(4) Through the test,it was found that the 6 m~9 m retaining bamboo forest had the best growth,the highest biomass and the best transformation effect.