摘要
田间试验结果表明,在甘蓝斜纹夜蛾卵孵盛期至低龄幼虫初发期(3龄未分散前),每1hm^2用1%印楝素水分散粒剂600~750g防治一次,能达到理想的防治效果。该产品速效性一般,药后1天防效在50%左右,持效期较长,药后10天防效接近90%,对甘蓝安全,可以大面积推广应用。
The field test results show that in eggs hatching peak of cabbage Prodenia litura till the early period of the young larvae(third instar before undispersed),applying 1%azadirachtin WG 600~750g/hm^2 once,we can achieve ideal control effect.The fast-acting effect of the product is general,control efBciency is about 50%1d after.Anyway it has longer duration,the control efficiency is approaching 90%after 10 d.It is safe to cabbage and can be large-scale applicated.
作者
刘元明
孙光忠
邓劲松
袁浩
Liu Yuanming;Sun Guangzhong;Deng Jinsong;Yuan Hao(Plant Protection Station of Hubei Province,Wuhan 430070,China;Hubei Vocational Biotechnology College,Wuhan 430070,China)
关键词
印楝素
斜纹夜蛾
防治效果
azadirachtin
Prodenia litura
control effect
