套袋翠冠梨黄粉蚜的防治试验

Control Experiments of Aphamosligma jarsuine of Cuiguan Pear Covered with Bagging

近年因套袋技术在梨果树上的不断推广应用,梨黄粉蚜的危害也日渐严重,找到一种能有效防治梨套袋后黄粉蚜发生的方法十分重要。以套袋翠冠梨为材料,选用50%抗蚜威超微可湿粉剂防治套袋翠冠梨黄粉蚜,用3组不同处理,即I组套袋前3天、套袋后25天、套袋后48天3次都用50%抗蚜威超微可湿粉3000倍喷药防治。II组只进行前2次喷药防治,III组进行第一次和最后一次喷药防治。试验研究结果表明,I组与II组、III组及对照相比都有极显著性差异,对套袋翠冠梨黄粉蚜防治效果最好的是I组。因此,I组这种方法防治效果好,能减少喷药次数,降低农药成本,值得推广应用。

Aphamosligma jarsuine on cuiguan pear was controlled by pirimicarb 50% ultrafine WP at 3000 x dilution, in which three group treatments, I： spraying the aphicide at 3 days before bagging, 25 days and 48 days after bagging; II： spraying the aphicide at 3 days before bagging and 25 days after bagging; III： praying the aphicide at 3 days before bagging and 48 days after bagging, were conducted. The results showed that treatment I was the best performance. This method was worth being extended.