水稻三化螟防治研究进展与现状

Progresses in and Current Situation of Researches on Paddy Stem Borer (Tryporyza incertulas )

近年来研究表明 :耕作制度、培管水平、水稻生育期、气候条件均可影响三化螟种群的消长 ,经济阈值与防治指标有不断放宽的趋势 ,应用抗虫品种、改革耕作制度、增加天敌数量。

The growth and decline of paddy stem borer(Trypporyza incertulas) population were affected by cropping system, cultivation level , growing period of rice and climatic factors. The trend of economic threshold and controlling index had being constantly relaxed . Trypporyza incertulas's population could be controlled by means of using insect resistance breeds, changing cropping system, increasing natural enemies' population and appling pesticides.