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棉花烂铃病是我省棉花铃期主要病害之一。据最近几年调查,烂铃率为0.7～6,2％,特别是8月份多雨,烂铃率达27%,覆盖地膜棉田发病高达30％以上。受害轻的棉铃成为僵瓣花,失去纺织价值,只能做絮棉用;受害重的全铃腐烂无收成。我们从1980年开始进行各种药剂试验,筛选出对棉花烂铃病有明显效果的杀菌剂——80％代森锰锌,并取得了90％以上的防治效果。
Cotton boll disease is one of the main diseases of cotton boll in our province. According to the survey in recent years, the rate of rotten boll is 0.7-6.2%, especially in August it is rainy and rotten boll rate is 27%, covering up to 30% of the incidence of mulching cotton fields. Light boll damage became petals petals, loss of textile value, can only be used cotton; heavy bear heavy bell rot without harvest. Since 1980, we have carried out a variety of pharmaceutical tests to screen out 80% mancozeb, a fungicide that has a significant effect on cotton boll bellows disease, and achieved more than 90% control.