1999年以来,上海地区水稻病虫发生严重,分析其原因,一是免耕面积增大和暖冬的气候条件增加了部分害虫的越冬基数;二是优质稻和杂交稻面积扩大,利于病虫的发生;三是害虫抗药性上升,缺乏特效药剂,导致残虫数量增加等。通过建立计算机预警系统,开展水稻螟虫综防研究,调整防治策略,大力进行综合治理等,控制了病虫严重为害势头,取得了较好的成效。 Since 1999, pests and diseases of rice have been serious in Shanghai. The reasons for this are as follows: First, the increase of no-till area and the climatic conditions of warm winter increase the overwintering base of some pests; second, the area of ​​high-quality and hybrid rice is widened, which is good for the occurrence of pests and diseases ; Third is the rise of pest resistance, the lack of specific agents, resulting in an increase in the number of ticks. By establishing a computer early warning system, carrying out comprehensive prevention and control of rice stem borers, adjusting control strategies and vigorously carrying out comprehensive management, the control of the serious pest and disease damage has yielded good results.