1、以虫治虫。主要是利用一些寄生蜂、寄生蝇等寄生性天敌昆虫和瓢虫、螳螂、蚂蚁、捕食螨等捕食性天敌昆虫来消灭害虫。如利用周氏啮小蜂来防治美国白蛾、杨扇舟蛾、杨毒蛾,利用赤眼蜂来防治松毛虫、木撩尺蠖,利用肿腿蜂来防治天牛等。2、以菌治虫。利用病原微生物①真 1, worm pest control. Mainly the use of some parasitic wasps, parasitic flies and other parasitic natural enemies of insects and ladybugs, praying mantis, ants, predators such as predatory insects to kill pests to kill pests. Such as the use of Zhou’s bee to prevent the small bee American White moth, Yang Fan moths, the poisonous moths, the use of Trichogramma to control pine caterpillars, wood tease Chihuan, the use of swollen legs bee to control Tianniu and so on. 2, to kill pests. Use of pathogenic microorganisms ① true