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甜菜夜蛾是 1种间歇性大发生的害虫 ,其食性杂(可吃 1 70余种植物 ) ,成虫夜间活动 ,有趋光性。幼虫三龄前群集为害 ,但食量小 ;四龄后食量大增 ,昼伏 (土表层 )夜出 ,有假死性 ,为害极为严重。 1 999年宜良县在玉米、蔬菜上暴发 ,群众不认识 ,常规药剂和施药方法难奏效。为控
Beet armyworm is a pest that occurs intermittently, its food miscellaneous (eat more than 1, 70 kinds of plants), adult night activity, phototaxis. The third instar larvae before the cluster damage, but the appetite is small; fourth-year food intake increased greatly, day volt (surface layer) night out, there is suspended animation, the damage is extremely serious. Yeliang County in 1999, outbreaks of corn, vegetables, the masses do not know, conventional methods and application of pesticides ineffective. To control