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云南松人工林间伐抚育开始的时间,可根据林分的郁闭程度、林木的稀疏状况而定,一般在林分10～15年生期间进行第一次间伐抚育,以后每隔3～5年进行一次间伐抚育。一、间伐抚育的目的1.改善林木生长环境。云南松人
The starting time of the thinning and tending of Pinus yunnanensis plantations can be determined according to the degree of canopy closure and the sparseness of the trees. The first interval thinning and tending are usually carried out during the period of 10-15 years in the stands, and every 3 to 5 years thereafter A thinning tending. First, the purpose of thinning and tending 1. To improve the forest growth environment. Yunnan pine people