稻飞虱原为我省早、中稻普遍发生且危害很严重的主要害虫。1970年以来,已发展到危害双季晚稻,并有逐年加重的趋势。如1972年郴洲地区早、中稻发生稻飞虱220万亩,晚稻发生53.2万亩。1973年衡阳、邵阳等地区反映,晚稻稻飞虱的发生危害超过早稻。特别是1974年,全省不但发生面广,而且发生量大,有的地区为害损失较重。湘潭地区380万亩晚稻, Planthopper was the main pest of early and middle rice in our province and it was very harmful. Since 1970, it has been developed to endanger the quality of late-season late rice, and it has been increasing year by year. As early as 1972 Chenzhou area, rice planthopper occurred 220 million mu, late rice occurred 53.2 million mu. 1973 Hengyang, Shaoyang and other regions reflect late rice planthopper hazards than early rice. Especially in 1974, the province not only occurred a wide range of occurrences, but also took place in large quantities. In some areas, the loss was devastating. Xiangtan area of ​​380 mu of late rice,