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2000年北京市甜菜夜蛾大发生，特别是秋季暴发成灾，对秋播紫花苜蓿等作物为害严重。为此，我们组织区（县）进行了药剂筛选试验和生产防治，取得了较好的效果。本文初步论述了甜菜夜蛾暴发原因为害特点及其防治技术措施，可为今后进一步开展甜菜夜蛾的预报与防治提供资料。一
Spodoptera exigua occurred in Beijing in 2000, especially the outbreak of autumn disaster, alfalfa crop autumn seeding serious damage. To this end, we organized the district (county) conducted drug screening tests and production control, and achieved good results. This article discussed the main causes of the damage caused by Beet armyworm outbreak and its prevention and control measures, which could provide information for the further prediction and control of Beet armyworm in the future. one