我国草地贪夜蛾的防控对策与建议

草地贪夜蛾Spodoptera frugiperda(J.E.Smith)是世界性重大农业害虫,该虫自2019年1月入侵我国云南省到5月下旬,在不到5个月的时间里就已经入侵了长江流域及其以南的15个省(市、自治区)。预计6月和7月将到达我国的玉米主产区黄淮海夏玉米区和北方春玉米区,受威胁玉米面积1 300多万hm 2,将严重威胁我国的玉米生产安全。我国玉米的种植布局随季节和纬度变化从南至北递次推移,时间和空间上互补,为草地贪夜蛾提供了丰富的食物资源,为其种群区域性迁移和周年繁殖为害提供了良好的自然条件。为做好草地贪夜蛾的防控工作,及时控制其为害,本文在总结国内外防控草地贪夜蛾经验教训的基础上,初步提出了我国草地贪夜蛾的防控对策。

Strategy and advice for managing the fall armyworm in China

The fall armyworm, Spodoptera frugiperda, is a serious agricultural pest in the world. By the end of May, 2019, it has expanded to 15 provinces in Yangtze River Basin and its south area in less than five months since its first invasion into Yunnan province in January, 2019. It is estimated that S. frugiperda could reach the main corn production regions, the Huang-Huai-Hai summer corn region and the north spring corn region in June and July, respectively, and probably infest about 13 million hectares of corn, which would pose a serious threat to the security of corn production in China. The patterns and arrangements of corn cultivation in China were gradually changed from south to north with seasonal and latitudinal changes. The temporal and spatial complementation in corn growing provides ample food resources for S. frugiperda as well as favorable conditions for their regional migration and continuous breeding. In order to prevent and control S. frugiperda effectively, the strategies for managing S. frugiperda in China were proposed based on the previous lessons and experiences in handling the migratory pest and techniques employed for the control of S. frugiperda both at home and abroad.