实生毛竹幼林,具有出笋多,成竹率高,新竹逐年生长幅度大及无大小年等特点.据溧水县林场调查,用2—3年生竹苗造林,三年后一般每亩出笋成竹5000株左右,高的达万株以上.因此,实生竹林若不加间伐就会使竹株高度密集,同龄立竹高低悬殊较大,翌年大部小竹被压枯死,竹鞭纵横交错,竹桩较多.这样,对实生毛竹幼林的生长和行鞭,不能不带来一定的影响、为此,笔者曾于1979—1981年对3—5年生实生毛竹幼林作了不同间笋强度的试验研究.现将初步结果总结如下: Real young bamboo forest, with more bamboo shoots, bamboo into a high rate of annual growth of Hsinchu and no size year-old, etc. According to Lishui County Forest Farm investigation, with 2-3 years of bamboo seedlings afforestation, three years after the general out of bamboo shoots per acre Therefore, if the actual bamboo without thinning will make the bamboo plant highly dense, the same age bamboo height disparity is greater, the next year most of the bamboo is pressed dead, bamboo whips criss-cross, bamboo So more, so that the growth of young bamboo shoots and bamboo whip, can not but bring a certain impact, therefore, I had in 1979-1981 on 3-5 years of young bamboo shoots were made of different bamboo shoot strength test Study. The preliminary results are summarized as follows: