一、课题提出自从我国1975年提出“预防为主,综合防治”的植保方针以来,棉花病虫综合防治工作引起各方面的重视。为了从根本上解决棉花害虫的防治问题,我省从1977年起在安庆地区设点开展棉虫综防技术的探索。安庆两熟高产棉区,棉田多分布在长江两岸,土地肥沃,气候条件适宜,植棉技术较先进;1982年曾提出一套“合理用药,以益控害”的综防措施,初步改变了过去重前轻后、单一化防乱打农药的习惯。但是,害虫种群结构是动态系统,各地差异较大,不可能有一个统一的综防模式。即使在同一个地区随着自然环境、耕作制度的变化和生产技术的进步,也需不断改进修订综防措施的组合。农村自实行生产责任制后,棉田管理分散,原综防措施受到限制。协作组在总结已有研究成果的基础上,从生产实际需要出发,加强了基础理论探讨,扩大了研究范围,力图重新组建一个更能适应沿江两熟棉区的棉花害 I. Issues raised Since our country introduced the principle of “prevention first and comprehensive prevention and control” in 1975, comprehensive prevention and control of cotton diseases has drawn great attention from all fields. In order to fundamentally solve the problem of cotton pest control, our province since 1977 to set up spots in Anqing to explore the comprehensive technology of cotton insects. Anqing two high-yield cotton area, cotton fields are located in the two sides of the Yangtze River, fertile land, suitable climatic conditions, more advanced cotton technology; in 1982 had put forward a “rational use of drugs to control harm” comprehensive preventive measures, initially changed Light weight before the past, a single anti-chaotic fight pesticide habit. However, the pest population structure is a dynamic system, with great differences across the country. It is impossible to have a unified mode of comprehensive prevention. Even in the same area as the natural environment, farming system changes and production technology progress, but also need to continuously improve the combination of comprehensive preventive measures. Since the implementation of production responsibility system in rural areas, the management of scattered cotton fields, the original comprehensive preventive measures are limited. On the basis of summarizing the existing research results and starting from actual production needs, the collaborative group strengthened the discussion on basic theories and expanded the scope of the study so as to rebuild a cotton plant that is better adapted to cotton fields along the Yangtze River