１毒签防治森林蛀干害虫原理近年来我省森林蛀干害虫发生年积逐年增加，危害日趋严重。目前年发生面积在５０００ｈｍ２以上，局部林分因其危害已出现片状枯死，防治难度大，防治效果差，已困扰着林业生产的发展。控制蛀干害虫对森林的危害已成为林业生产中亟待解决的问题... 1 poisoning prevention and treatment of forest stems pests principle In recent years, the annual occurrence of forest boring pests in our province increased year by year, the harm is becoming more serious. The current annual area of ​​5000hm2 or more, the local forest because of its hazards have been withered sheet, prevention and treatment is difficult, the poor control effect, has plagued the development of forestry production. Controlling the damage of stem borers to forests has become a pressing issue in forestry production ...