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为了寻求防治棉铃虫的有效措施,新疆棉区开始引种试种抗虫棉,通过几年应用,取得了很好的效果。种植转基因抗虫棉作为防治棉铃虫减轻棉铃虫危害的一项技术措施,越来越受到棉农的青睐和农业技术人员的关注。一、棉铃虫发生及危害现状棉铃虫在新疆北部和东部大部分棉区,1年发生3代。一般年份发生危害严重的为第2代,近几年,第3代危害加重。棉铃虫主要以幼虫危害棉蕾、花和棉铃,在危害重的棉田,棉铃虫咬食棉叶,蛀食棉花
In order to seek effective measures to prevent and control cotton bollworm, cotton planting in Xinjiang began to be used to test insect-resistant cotton and achieved good results through several years of application. Planting transgenic Bt cotton as cotton bollworm to control the harm of bollworm to reduce the harm of a technical measure, more and more by cotton farmers and agricultural technicians attention. First, the occurrence and damage of cotton bollworm Helicoverpa armigera in northern and eastern part of Xinjiang, most of the cotton area, occurred 3 generations a year. In the general year, the second generation is seriously endangered. In recent years, the third generation is harmed more seriously. Cotton bollworm infestation cotton buds, flowers and bolls mainly in larvae, cotton bollworms in the endangering heavy cotton fields, cotton bollworms eat cotton