落叶松是我省速生用材树种之一,全省落叶松人工林有255万亩.其中有1/5的林分急待进行透光抚育。透光抚育的年龄:落叶松栽植后林分郁闭度达0.9以上,林木间出现了大小、高矮等明显分化,并出现了少量濒死和枯立的树木,即可进行透光抚育。栽植密度如每亩296株,保存率在80％以上的落叶松人工林,在一 Larix is ​​one of the fast-growing timber species in our province, the province larch plantation has 2.55 million mu, of which 1/5 of the stands urgently need to conduct tempering. The age of translucent tending: After the larch planting canopy density reached 0.9 or more, the size, height and other obvious differences between the trees, and the emergence of a small number of dying and dead trees, you can conduct light tending. Planting density, such as per acre 296 strains, the preservation rate of more than 80% of larch plantations, in one