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根据经营目标,毛竹林生产大致可分为材用、笋用和纸浆林三种.目前,我省前两者经营较多,后者经营较少.并在经济效益上还存在一定的争议.为了探讨它们在经济效益上的差异,从而取得统一的认识,我们于1980—1982年进行了测定和比较研究.一、选地和方法试验系在宜兴县茗岭公社岭下大队第9生产队芦荡里小山头上进行.土壤为黄泥土,深0.5—1米,pH值5.5,向阳坡度2.5°,毛竹林系纯林,经营历史上除1974—1979年为材用林外,其他年份均为笋用毛竹林.试区面积4亩,划分为4小区,每小区面积1亩.采用拉丁方排列.(见图1).其中1号、3号为笋用林,2号、4号为材用林.试区划分后,四周开挖浅沟,以防窜鞭.前后管理措施一样.
According to business objectives, bamboo forest production can be divided into timber, bamboo shoots and pulp forest 3. At present, the first two in our province to operate more, the latter operating less, and there are still some controversial economic benefits. In order to explore their differences in economic benefits, so as to achieve a unified understanding, we conducted the measurement and comparative studies from 1980 to 1982. First, the selection and method of testing in Yeling County Gongling Lingling Brigade 9 production team The soil is yellow soil, the depth is 0.5-1 meters, the pH value is 5.5 and the sunny slope is 2.5 degrees. The pure forest of Moso bamboo forest is dominated by the forest in 1974 and 1979 As bamboo shoots with bamboo forest.The test area of 4 acres, is divided into 4 residential areas, each plot area of 1 acre. Latin square arrangement (see Figure 1) .In No. 1, No. 3 bamboo forest, No. 2, No. 4 For the timber forest. After the test area, digging shallow ditch around to prevent channeling whip. The same management measures before and after.