5%苏云金杆菌·茚虫威悬浮剂防治小菜蛾田间药效评价

Efficacy Evaluation of Bacillus thuringiensis·Indoxacarb 5% SC to Control Plutella xylostella in the Field

[目的]小菜蛾是世界性十字花科蔬菜的重要害虫,也是产生抗药性最严重的害虫之一。为了推广高效低毒杀虫剂,开展了5%苏云金杆菌·虫威悬浮剂防治小菜蛾的田间药效试验。[结果]5%苏云金杆菌·茚虫威悬浮剂按600、900、1200 mL/hm^2制剂量对小菜蛾有较好的防治效果(药后3~10 d的虫口防效为78.04%~99.42%)。[结论]5%苏云金杆菌·茚虫威悬浮剂比单剂具有高效、速效、持效期长的特点,对甘蓝安全,是防治小菜蛾的理想方法。

[Aims]Plutella xylostella,an important pest of cruciferous vegetables worldwide,is one of the most severely resistant pests.In order to promote high-efficacy and low-toxicity insecticides,the field trials of Bacillus thuringiensis·indoxacarb 5%SC was conducted for control of Plutella xylostella.[Results]The test results showed that B.thuringiensis·indoxacarb 5% SC had a better control effect on P.xylostella at 600,900 and 1200 mL/ha(the insect population control effect was 78.04-99.42% after 3-10 days).[Conclusions]Compared with B.thuringiensis single dose and indoxacarb single dose,B.thuringiensis·indoxacarb 5% SC has the characteristics of high efficacy,quick effect and long lasting effect.It is safe for cabbage and is an ideal method for controlling P.xylostella.