对2005年水稻褐飞虱大发生的思考

Factors causing the outbreak of brown planthopper(BHP),Nilapavata lugens Stl in China in 2005

针对我国2005年水稻褐飞虱暴发成灾,从药剂使用角度分析了我国褐飞虱成灾的原因。外来虫源大量迁入、种植制度和水肥管理对褐飞虱有利、农药的诱导作用是3大主要因子。农药诱导褐飞虱猖獗主要包括对非靶标生物的杀伤、施药技术不尽合理、药剂品种使用不当、耐药性或抗药性增加等因子。

The factors affecting the outbreak of the brown planthopper（BHP）, Nilapavata lugens Stal, were reviewed, The mixture of migratory BHPs from abroad and local population resulted in the failure of chemical control. The insecticide induced resurgence played an important role in the failure of chemical control in 2005, which had several possible mechanisms, including physiological enhancement of pest fecundity, reduction in herbivore-herbivore competition, increase in pest resistance to insectirides, alteration of host plant nutrition, killing of natural predators and parasites of the pest and irrational spraying techniques.