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森林害虫的生物防治就是利用害虫的天敌或一些物理化学措施(如利用射线、化学药剂、性引诱剂等使害虫不育或诱杀的措施)防治虫害的一种方法.生物防治是森林害虫综合防治中的一个重要方面,它有很多优点:①对人畜安全,不会杀死害虫的天敌;②不污染环境;③害虫不会产生抗性;④这种方法不但可以用在害虫已经大发生的地区直接歼灭害虫,还可以用在大发生开始的地区,制止和预防害虫继续蔓延.因此近年来生物防治日益受到人们的重视.现在把比较常用的几种方法介绍如下.
Biological control of forest pests is a method of pest control using the natural enemies of pests or some physical and chemical measures (such as the use of radiation, chemical agents, sex attractants, etc.) to control pests. Biological control is the comprehensive control of forest pests It has many advantages: ① It is safe against human and livestock and will not kill natural enemies of pests. ② It will not pollute the environment. ③ Pests will not produce resistance. ④ This method can not only be used in pests that have already occurred The area directly wiped out pests, but also can be used in the beginning of the great area to stop and prevent the spread of pests. Therefore, in recent years, biological control has drawn increasing attention .There are several commonly used methods are introduced below.