合理修枝可以改善林内通风透光条件,增强树势,直接或间接地改变了松干蚧的生活环境,是综合防治松干蚧的一项重要措施。近年来,这种防治措施,已日益受到人们的重视。杭州、山东、辽宁等松干蚧发生区的群众,采用修枝、卫生伐等措施,不断地改善松林生态环境,已取得了良好的防治效果。我们在总结群众经验的基础上,进一步做了一些调查和对照试验,并对资料进行了数量 Rational pruning can improve the ventilation and light conditions in the forest and enhance the tree vigor, which directly or indirectly change the living environment of pine and kite, which is an important measure for comprehensive prevention and control of pine and kites. In recent years, such prevention and control measures have drawn increasing attention by people. Hangzhou, Shandong, Liaoning and other areas of massif crassipes, the use of pruning, sanitation and other measures to continuously improve the pine forest ecological environment, has achieved good control effect. On the basis of summing up the masses’ experience, we further conducted some surveys and controlled experiments and conducted quantitative surveys on the data