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近年来四川稻飞虱为害以白背飞虱为主,大发生频率较高。5～6月外地稻飞虱首先迁入川东南及毗邻地区,种群扩大后构成四川盆地其他稻区虫源,7月下旬至8月上旬是稻飞虱在四川为害的高峰期。根据稻飞虱发生特点,将稻飞虱防控策略由“压前控后”调整为全面控制虫源区,重点监控波及区,前期实行综合防治,穗期开展达标防治,成功控制了2012年的稻飞虱大发生为害。
In recent years, Sichuan planthopper infestation is mainly characterized by white-backed planthoppers, and its occurrence frequency is high. From May to June, planthoppers in the field first migrated to the southeast and adjacent areas of southeastern Sichuan. Populations of other planthoppers in the Sichuan Basin were formed after the population expanded. From late July to early August, the planthopper was the peak of planthopper infestation in Sichuan. According to the characteristics of occurrence of planthopper, the control strategy of planthopper was changed from “pre-pressure control” to comprehensive control of insect-origin area, with emphasis on monitoring and control of the affected area. In the early stage, comprehensive prevention and control was implemented, 2012 planthopper occurred harm.