抗虫棉在生产上推广应用 ,既减少了农药投入 ,省工省时 ,又保护了生态环境 ,很受棉农喜爱。但在种植中 ,部分棉农对抗虫棉的抗虫性及其管理的特殊要求缺乏全面正确的了解 ,致使经济效益不太显著。一、播种较晚与常规夏棉一样 ,大多于 5月 2 0日前后浇完麦黄水播种。由于抗虫棉? Bt cotton in the promotion of production applications, both to reduce pesticide inputs, saving time and labor, but also protect the ecological environment, it is loved by cotton farmers. However, during planting, some cotton farmers have no comprehensive and correct understanding of the pest resistance and the special requirements for their management, resulting in less obvious economic benefits. First, sowing the same as conventional summer cotton, most of the May 20 before and after pouring wheat water sowing. Because of insect resistant cotton?