毛竹是由鞭根繁殖更新的,新竹生长依赖于母竹供给养分,因此,竹林应保持一定的母竹数量,才能促进毛竹高产。如果采伐过多,母竹少,就会影响新竹生长。就这个问题,1963年我们对浙江省安吉县双建公社毛竹用材林的不同密度与留竹度数进行了调查,发现竹林密度与留竹度数对新竹生长有一定的关系,这对竹林的留竹度数、采伐强度提供了初步的理 Phyllostachys pubescens rhizome breeding is updated, Hsinchu growth depends on the supply of mother bamboo, therefore, bamboo should maintain a certain number of mother bamboo in order to promote high-yield bamboo. If too much logging, mother bamboo less, it will affect the growth of Hsinchu. On this issue, in 1963, we surveyed the different density and bamboo retention of Phyllostachys pubescens plantations in Shuangjian commune in Anji County, Zhejiang Province. We found that bamboo density and bamboo retention had some relationship with the growth of bamboo, Cutting strength provides a preliminary rationale