在世界上已发现的的害虫种类中,能造成危害需要防治的害虫种类仅占1％,99％的种类属于潜在性害虫。其原因是多方面的,但自然天敌对害虫的控制作用是重要原因之一。为充分利用和发挥鄂南稻区自然天敌的作用,1980—1982年我们在通城县锦山公社阔田大队,开展了稻田捕食性天敌保护利用方法的试验示范 Among the pest species that have been found in the world, only 1% of the pest species that can cause harm need to be controlled, and 99% of species are potential pests. The reasons are many, but the control of natural enemies of pests is one of the important reasons. In order to make full use of the role of natural enemies in the paddy fields in southern Hubei Province, from 1980 to 1982, we conducted a pilot demonstration of the conservation and utilization methods of predatory natural enemies in paddy fields in the Kutian Brigade of the Commune in Jinshan, Tongcheng County