稻纵卷叶虫是东沟稻区主要害虫之一。近年其发生危害日趋严重。为了更有效地消灭稻纵卷叶虫,我们对它的发生规律和防治措施进行了初步调查研究。一、稻纵卷叶虫发生的基本规律(一)发生时间据1968—1971年连续四年观察,在东沟地区稻纵卷叶虫一年发生三代(次)。 Rice leafroller is one of the main pests in Donggou rice area. In recent years, its occurrence has become increasingly serious. In order to eliminate the rice leafroller more effectively, we conducted a preliminary investigation of its occurrence and prevention measures. First, the basic rules of the occurrence of rice leaf roller (a) the occurrence of According to 1968-1971 for four consecutive years of observation, in the Donggou region trifoliata three times a year (times).