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汉阴县凤凰山油松飞播幼林的抚育间伐工作,是在1983年秋开展的。工作开始,我们就注意了试验研究,经三年多的试验观察看出,在不同立地条件,不同林分密度的飞播幼林中,以不同的间伐作业方式,进行不同强度的间伐,飞播幼林的生长与未抚育间伐的林分有相当大的区别。现简单介绍如下,供参考。一、抚育间伐技术措施确定1.间伐方法的确定由于现实林分密度大,自然分化剧烈,我们采用透光抚育方法,在“三砍三留”,兼顾株行距的原则下,先将生长上关系密切的林木划为植生组,再在植生组内进行林木
Hanyin County Fenghuangshan pine seeding young forest tending thinning work carried out in the autumn of 1983. At the beginning of the work, we paid attention to the experimental study. After more than three years of experimental observation, we can see that in the young silage with different site conditions and different stand densities, different intensity thinning and seeding There is a considerable difference between growing and not tending the gaps. Now briefly as follows, for reference. First, tearing thinning technical measures to determine 1. Thinning method to determine As the actual stand density, severe natural differentiation, we use the method of light tending, in the “three cut three stay”, taking into account the row spacing of the principle, the first growth The close-knit forest is designated as a planting group, and then the trees are planted within the planting group