我县种棉已有三十年的历史。随着植棉年限的增长,棉花害虫的发生也越来越重,特别是进入七十年代以来,棉蚜、红铃虫、棉铃虫、红蜘蛛等害虫,连年暴发,造成产量损失,特重年份损失竟高达40—50％。为保证棉花丰产丰收,根据“预防为主,综合防治”的植保方针,我县自1978年开始,在棉船公社江心大队6,000亩棉地上,开展了棉花害虫大面积防治技术的研究和应用,并取得了一定成效,主要表现在:第一虫害减轻。红铃虫对青铃的为害率从1976年的90％以上,下降到20％以下,平均每铃侵入虫数由5头以上,下降到0.4头以下;棉铃虫百株 My county has 30 years of cotton farming history. With the growth of cotton growing years, the occurrence of cotton pests is also getting heavier and heavier, especially since the seventies, cotton aphids, pink bollworm, cotton bollworm, red spider and other pests, successive years of outbreaks, resulting in yield loss, especially heavy Year loss actually as high as 40-50%. In order to ensure a good harvest of cotton, according to the principle of “prevention first, comprehensive prevention and cure”, our county started research and application of cotton pest large-scale prevention and control technology on 6,000 mu cotton land of Jiangxin Brigade of MPCC since 1978. , And achieved some results, mainly manifested in: the first pest mitigation. The damage rate of pink bollworm to Cyanobacteria decreased from above 90% in 1976 to below 20%, and the average number of insects per boll dropped from 5 to below 0.4;