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近年来,基因抗虫棉在河北省衡水市桃城区大面积推广,虽然对棉铃虫等鳞翅目类害虫有了较大程度的控制,但对其他类害虫效果不大,如属于半翅目的棉盲蝽。同时,随棉田用药量的减少,棉花害虫的种群也发生了变化,过去零星发生的次要害虫棉盲蝽,种群不断增长,为害逐渐加重,现已成为主要害虫,发生频率越来越高,对棉花生产造成了极大的为害。据调查,桃城区棉盲蝽发生面积有逐年上升的趋势,2009的发生面积为棉田总面积的20%,2014
In recent years, large-scale popularization of gene-resistant cotton in Taocheng District, Hengshui City, Hebei Province has a great degree of control over Lepidoptera pests, such as the cotton bollworm but is not effective against other pests such as Hemiptera Cotton bug. At the same time, the population of cotton pests also changed with the decrease of the dosage of cotton field. The minor insect, Myzus persicae, which occurred sporadically in the past, grew continuously, the damage gradually increased, and now it has become the main pest, Caused great harm to cotton production. According to the survey, the occurrence area of cotton lacewings in Taocheng District has been increasing year by year. The area of 2009 occurred was 20% of the total area of cotton fields. 2014