目前,果树生产中喷洒农药是防治害虫的主要手段,然而果园中发生的害虫和广泛存在的害虫天敌,在长期的进化过程中,逐步形成了相互依存、相互制约的生态平衡关系。在农药防治害虫过程中如不注重维护害虫与天敌之间的生态链平衡,则防治不仅不会收到良好的效果,反而会诱导害虫猖獗性发生。一、果树害虫天敌的分类果树害虫天敌主要分为捕食性和寄生性两大类。捕食性天敌主要有捕食性瓢虫、草蛉、小花蝽、蓟马、食蚜蝇、捕 At present, the spraying of pesticides in fruit trees is the main method of pest control. However, the pests in the orchards and the predators of pests widely exist in the process of long-term evolution and gradually form the ecological balance relationship of interdependence and mutual restraint. In the pest control process of pesticides without paying attention to maintain the ecological balance between pests and natural enemies, the control will not only not receive good results, but will induce pest rampant. First, the classification of fruit pests natural enemies of fruit pests predators are divided into predatory and parasitic two categories. Predatory natural enemies include predatory ladybugs, weeds, stink bugs, thrips, hoverflies, catches