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由于害虫的抗药性和农药对环境的污染情况日益加剧,生物防治普遍引起了人们的重视,而且成为害虫综合防治的一个主要内容。生物防治中就以虫治虫所用的天敌来源而言,主要分为两大类。一是引进外来天敌或大量饲养释放;二是采取各种有效措施保护利用当地天敌,提高天然生物控制害虫的效能。显然后者更为重要,它是当前生物防治工作中应该加以重视的问题。
Due to the pest resistance and the aggravating pollution of the environment by the pesticides, biological control has aroused people’s attention in general and has become a major component of pest integrated control. In terms of the natural enemies used for insect pest control in biological control, there are mainly two major categories. First, the introduction of foreign natural enemies or release a large number of release; the second is to take various effective measures to protect and use of natural enemies to improve the effectiveness of natural biological control pests. Obviously the latter is even more important. It is a problem that should be paid more attention to in the current biological control.