自人民公社化到70年代末,棉红铃虫在新乡棉区曾一度绝迹,后一直被控制在次要害虫水平,常年不发生为害。 从1985年在新乡县小冀乡最早发现该虫回升以来,逐年上升。据1989年9月中旬、10月下旬两次在新乡县小冀乡扎花厂检查,在露天花垛的防雨布内侧,棉红铃虫幼虫呈粉红色毡状覆盖,几乎看不到帆布本色,先后抽查11个花垛、2个籽棉仓,籽花带虫量平均在60—108头/公斤。七里营乡南王庄有块5亩棉田,9月17日调查,虫花、僵瓣铃占58％,有虫株率接近100％,一眼看去僵瓣铃比比皆是,为害极严重。同期抽查发现,张青、王屯等村一些田块的受害株率亦在22—73％左右。另外据专门走访调查,新乡地区的原阳、获嘉、卫辉等县也有类似不同程度的回升。 分析棉红铃虫回升的原因,主要是多年来忽视了对越冬幼虫的防治。棉衣以家庭为单位每年要室内自留种籽棉,当年收摘的晚秋桃、僵瓣花亦留至来年与新花一同缴售,改变了以往集体收、晒、扎、冬贮的习惯,帘架 From the people’s communes to the late 1970s, cotton bollworm once extinct in Xinxiang cotton area, has been controlled at the level of the secondary pests, perennial harm. Since 1985, it was found in Xiaoti Township of Xinxiang County that it was the first to rise year after year. In mid-September 1989 and late October, two inspections took place in Zhahua Factory, Xiaji Township, Xinxiang County. Inside the pilasters in the open air yard, pink bollworm larvae were covered in pink felts and barely visible in canvas , Has checked 11 flower stacks, two seed cotton barn, seeds with an average amount of flowers in the 60-108 head / kg. Qili camp Township South Wangzhuang a block of 5 acres of cotton fields, September 17 survey, insects, dead bell accounted for 58%, the rate of nearly 100% strains of insects, a look at stiff bell everywhere, a very serious harm. The same period found that Zhang Qing, Wang Tuen and other fields in some of the plots of the victim plant rate is also about 22-73%. In addition, according to a special survey, Xinxiang District, the original Yang, Harvest, Wei Hui and other counties have similar levels of recovery. Analysis of cotton bollworm pick up the reason, mainly over the years ignored the prevention and treatment of overwintering larvae. Cotton to the family as a unit every year to indoor seed cotton seed, harvest the late autumn harvest peach, petal petals also stay with the new year to sell, changing the past collective income, sun, bar, winter storage habits, curtain frame