褐稻虱是我国水稻上的重要害虫。近十多年来,大发生频次明显增加,为害程度日趋严重。为了有效地控制褐稻虱的发生为害,1973年初全国曾制订了统一的测报办法,但由于当时没有摸清褐稻虱长距离迁飞的特性,因此在测报工作中,常常不能正确反映实际发生动态,防治工作往往陷于被动。1977年起,建立了全国联合测报网,开展全国性的联合测报,以指导各地短期测报及大面积防治。三年来的实践证明,联合测报不 Brown planthopper is an important pest on rice in our country. In the past decade or so, the frequency of occurrence of major accidents has increased markedly and the degree of harm has become increasingly serious. In order to effectively control the occurrence of brown planthopper, a unified reporting method was formulated throughout the country in early 1973. However, since the characteristics of long-term brown planthopper migration were not known at that time, it often failed to accurately reflect the actual occurrence Dynamic, prevention and control are often trapped in the passive. Since 1977, a nationwide joint survey network has been set up and a nationwide joint survey report has been conducted to guide short-term survey reports and large-scale prevention and control throughout the country. Three years of practice has proved that the joint test not