不同药剂对橙带蓝尺蛾的防治效果

Effects of different Insecticides on Controlling Milionia basalis

针对近年橙带蓝尺蛾Milionia basalis发生严峻的形势,为生产实践中提供更多可供选择的高效低毒药剂,项目采用室内和林间测定相结合的方法,测定了10%高效氯氟氰菊酯悬浮剂、1.2%烟碱·苦参碱乳油、5%氯虫苯甲酰胺悬浮剂、2%甲氨基阿维菌素苯甲酸盐微乳剂、20%除虫脲悬浮剂5种药剂对橙带蓝尺蛾3龄、5龄幼虫的防治效果。室内测定结果表明,针对3龄幼虫,药后5 d,前4种药剂防治效果即可达93.3%以上;针对5龄幼虫,药后7 d,前4种药剂防治效果达90.5%以上。林间测定结果表明,药后7 d,前4种药剂防治效果均可达97.0%以上。测定结果表明前4种药剂对橙带蓝尺蛾3龄和5龄幼虫均有较好的防治效果,药后7 d防效均在90%以上,但在3龄幼虫期前防治见效更快。因此建议在橙带蓝尺蛾3龄幼虫前轮换施用前4种药剂,避免产生抗药性。

In view of the serious situation of the occurrence of Milionia basalis in recent years,in order to provide more effective and low toxic agents for production practice,different insecticide powders,such as 10%beta cypermethrin SC,1.2%nicotine and matrine EC,5%chlorantraniliprole SC,2%Emamectin Benzoate Microemulsion,20%Diflubenzuron SC,were tested to control 3rd and 5th instar larva of M.basalis in the library and field.The indoor results showed that for 3rd larvae,5 days after applying insecticides,control efficiency of the first four insecticides are above 93.3%;for 5th instar larva,control efficiency of the first four insecticides are above 90.5%in the seventh day.The field results showed that control efficiency of the first four insecticides are all above 97.0%in the seventh day.The results showed that control efficiency of the four insecticides are above 90.0%in the seventh day,but the controlling effect is faster before 3rd instar larvae.So it is suggested that the first four insecticides should be applied to the 3rd instar larvae to avoid drug resistance.