间伐抚育是森林经营工作中一项重要技术措施。合理进行抚育采伐;对改善林分卫生状况、减少病虫危害、增加林木抗性等都有好处。同时,通过间伐还能获得部分用材。所以如何结合生产的需要,因地制宜地制定间伐抚育的技术措施,也是当前林业生产上急待解决的问题。一、间伐抚育和各因子的关系1、连年生长量、造林密度、立地条件、林木分化程度、经济效益和间伐的关系幼龄阶段,林木胸径的连年生长量开始下降时期,往往是由于单位面积立木株数过密,林分内林木生长受到抑制。因此,用胸径连年生长量下降时期只能做为间伐抚育的 Thinning and tending are an important technical measure in forest management. Reasonable for felling and cutting; to improve the health status of the stands, reduce pests and diseases, increase the resistance of trees and so on are good. At the same time, through the thinning can also get some timber. So how to combine the needs of production, according to local conditions to develop thinning and tending technical measures, but also the current urgent need to solve the problem of forestry production. First, thinning and tending and the relationship between factors 1, perennial growth, afforestation density, site conditions, the degree of forest differentiation, economic benefits and thinning relationship between young age, DBH growth began to decline, often due to the unit area Stands overmuch stand, forest stand growth was inhibited. Therefore, the annual DBH decline can only be used as thinning