2016年分宜县二化螟发生较重的原因及防控对策

摘要

We analyzed the cause of heavy occurrence of Chilo suppressalis (Walker) in Fenyi County in 2016, mainly including the change of farming system and variety distribution, the incomprehensive ploughing of winter fallowing field, the less controlling times, the enhancement of insecticide resistance and different levels of pesticide use. Some prevention and control countermeasures for the 1st, the 2nd, the 3rd and the 4th generations of Chilo suppressalis (Walker) were put forward, as well as reasonable selection of pesticide and comprehensive utilization of green control.%分析了2016年分宜县部分乡(村)二化螟发生较重的原因,主要包括耕作制度及品种布局的变化、冬闲田翻耕不全面、防治次数相对较少、害虫抗药性增强和农药使用水平的不同;提出了耕沤稻田,秧田送嫁药,第一、第二代和二晚后期(第三、四代)二化螟不同代次的防治对策,以及合理选用农药和综合运用绿色防控的理念.