天然针阔叶幼龄林占林地面积较大。在此林中进行抚育间伐就能加速恢复针叶林,可是此时恰是营林工作大忙季节,劳力比较紧张,难以安排。面临这一矛盾只有采取降低阔叶树竞争能力的林学措施,才能实现针叶林分的更新。笔者认为采用抚育间伐技术是唯一有效的措施,但在抚育间伐时一定要掌握好间伐的不同时间和伐根高度。在混交幼龄林中阔叶树高度居林分的首位,而针叶 Natural coniferous and broad-leaved forest accounts for a larger area of ​​forest land. In this forest, tending thinning can speed up the recovery of coniferous forests, but at this time it is a very busy season for silviculture and labor is rather tense and difficult to arrange. In the face of this contradiction, conifers can only be renewed if they adopt the forestry measures to reduce the competitive ability of broad-leaved trees. The author believes that the use of tending thinning technology is the only effective measure, but in the tending thinning must grasp the different time and cutting the root height. Broad-leaved trees in the mixed young forest height ranks first in the stand, and needles