1　发生规律川中地区棉铃虫 1年发生完整 4代 ,个别年份发生不完整 5代。棉铃虫以蛹在棉花、玉米、辣椒、番茄等寄主作物田以及田埂、路边杂草地的 3.3～9.9cm深的土中越冬。越冬蛹于 4月中下旬开始羽化为成虫 ,在小麦、葱子、番茄和麻类、豌豆上产卵为害 ,5月下旬入土化蛹 ,6 1 occurs in the Central Sichuan bollworm occurred a complete 4 generations a year, individual years occurred incomplete 5 generations. The cotton bollworm pupae winged in the soil of 3.3-9.9 cm deep in the fields of host crops such as cotton, corn, pepper and tomato, as well as fields and weeds. Overwintering pupae begin to emerge as adults in mid-to-late April and spawn on wheat, shallot, tomato and hemp, peas, and pupate in late May