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近几年,由于农药施用失当等原因导致了棉铃虫的大暴发。探索新的防治途径,已成为棉花生产中的当务之急。我们根据助壮素的作用机理和棉铃虫的生活习性,在棉花生长的中后期喷施助壮素预防棉铃虫为害,取得了明显的效果。通过多点对比试验,在去年三、四代棉铃虫大暴发中,与不施助壮素比较,施用者降低了三、四代棉铃虫百株落卵量的29.7％和43.5％;成铃为害率减少70％以上;蕾、花、铃的总防
In recent years, due to improper use of pesticides and other causes of a large outbreak of cotton bollworm. Exploring new ways of prevention and control has become a top priority in cotton production. According to the mechanism of action of mepiquatosin and the life habit of cotton bollworm, we sprayed mepiquat chloride to prevent bollworm infestation in the middle and late stages of cotton growth and achieved remarkable results. Through multi-point comparison test, in the last three or four generations of large-scale outbreak of cotton bollworm, the applicators reduced 29.7% and 43.5% of the eggs shed by one or three generations of cotton bollworms compared with the no- Decrease the damage rate of more than 70%; bud, flowers, the total prevention of the bell