麦垄直播夏棉区，一代棉铃虫主要发生于小麦田，并集中于麦穗上产卵、取食为害；二代棉铃虫卵粒分布于各种秋作物田，但前期主要产于蕃茄、菜椒、花生、玉米、大豆上，棉花４片真叶后，对棉铃虫有明显的诱集作用；三代棉铃虫主要发生于棉田内；四代棉铃虫则主要为害迟发棉田、夏播玉米及晚播的其它秋作物。 The first generation of cotton bollworm occurred in the wheat field and focused on spike and eaten on the ear of wheat. The second generation of cotton bollworm eggs were distributed in various autumn crop fields, but the early stage was mainly produced in tomato, The four generations of cotton bollworm, peanut, corn, soybeans, cotton four true leaves, the cotton bollworm has obvious trapping effect; three generations of cotton bollworm mainly occurs in the cotton field; four generations of cotton bollworm is mainly delayed late cotton field, summer sowing corn And late autumn seeding other autumn crops.