实生毛竹幼龄期具有出笋多,成竹率高,生命力强,且随年龄的增加而不断提高质量的特点.为了探索实生毛竹成园后,不同留养密度与竹林质量的关系,我们从1979年开始进行实生毛竹幼龄期不同留养密度试验,以找出在一定的年限内最佳的保留密度,供生产上参考应用.试验地基本情况试验地位于溧水县林场科研组苗圃院墙东侧.原系易积水的低凹地.经挖高填低,开沟整平后,略呈西南高、东北低的倾斜地形.土壤为黄岗土,呈微酸性,质地较粘重,孔隙度小,结构较差;含有机质少,肥力低.1974年春,用本县自育的2年生实生毛竹苗,按3.33×5米的株行距(每亩40丛),全垦整地开穴造林(每丛3—5株带土块2.5一5公斤).当年除草松土4次,晚秋亩埋青草250公斤,人粪尿500公斤.1975年发笋前松土1次.结合深翻每亩施饼肥60公斤,1976年每亩施饼肥70公斤,至1984年为止,每亩年施饼肥50—75公斤,松土除草2—3 Real bamboo has the characteristics of young bamboo shoots, bamboo into high rate, strong vitality, and with increasing age and continuously improve the quality.In order to explore the relationship between the different stocking density and bamboo quality, Starting in 1979, different retention density experiments of young bamboo shoots were carried out to find out the best retention density in a certain period of time for reference for production.The basic situation of the trial ground is located in the wall of the nursery of Lishui County Forest Farm Research Institute East of the original Department of low-lying easy to stagnant water. After digging fill low, after trenching flat, slightly southwest, northeast low slope topography. The soil is Huanggang soil, was slightly acidic, texture is more viscous, porosity In the spring of 1974, two-year-old female bamboo shoots self-bred in this county were planted according to the spacing of 3.33 × 5 meters (40 piles per acre) (Each bundle of 3-5 with clods 2.5 to 5 kg.) That year weeding loosening four times, late autumn mu burial grass 250 kilograms, human excrement 500 kilograms. Mu Shi cake 60 kilograms of fertilizer per hectare in 1976, 70 kilograms of cake, until 1984, the annual pie 50-75 kilograms per mu, loose soil Grass 2-3