六十年代后期以来稻纵卷叶螟逐渐成为危害我区水稻的重要迁飞性害虫。我们于1975年在荆门县、1976和1977年在洪湖县,对其主要发生为害世代进行了测报调查,1978—1982年在江陵县纪南公社对其发生规律、测报及防治等进行了专题研究。本文着重介绍它的发生消长规律、预测预报办法和药剂防治试验的结果。 一、发生消长规律 (一)关于世代的划分:我们根据多年田间系统调查和积温推算,将6月10日以前划为第一代成虫发生期;6月中旬至7月上旬划为第二代发生期,此期正值我区成虫主要迁入盛期,是主要的为害世代;7月中旬至 Rice leafroller since the late 1960s has gradually become an important migratory pest to endanger the rice in our region. In 1975, in Jingmen County, in 1976 and 1977 in Honghu County, we carried out a survey on the major occurrences of pests in our county. In 1978 and 1982, we conducted a special study on its occurrence, measurement, prevention and treatment in Ji’nan commune, Jiangling County . This article focuses on its occurrence and decline of the law of prediction and forecasting methods and pharmaceutical control test results. First, there is a law of growth and decline (A) on the generation of division: We based on years of field system surveys and accumulated temperature projections, before June 10 will be designated as the first generation of adult occurrence period; mid-June to early July designated as the second generation Occurrence period, this period coincides with the main migration into the peak of adults in our region, is the main generation of harm; mid-July