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密植幼林,由于密度过大,间伐不及时,不便于机械作业,往往造成林木生长缓慢和衰退,这是我区用材林生产中普遍存在的问题。为了促进幼林生长,探索不同条件、不同培养目的的幼林适宜的间伐强度,一九七二年以来,我们在黄河林场杨、柳幼林内开展了间伐试验研究,收到初步效果,推动了林场幼林的间伐工作。现将试验结果及有关意见整理出来,供生产上参考。
Close planting of young forest, due to the density is too large, thinning is not timely, inconvenient for mechanical work, often resulting in slow growth and recession of trees, timber production in our region this is a common problem. In order to promote the growth of young forests and explore the suitable thinning intensity of young forests with different conditions and different training purposes, we conducted the thinning experiment in young forests and young forests of Yellow River forests since 1972, and received preliminary results to promote young forests in forests Thinning work. Now the test results and related advice sorted out for the production of reference.