粘颗·苏云菌等五种药剂对小菜蛾幼虫防治试验

Bulletin of Agricultural Science and Technology(2019)

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Abstract
试验选用粘颗·苏云菌等五种药剂对小菜蛾幼虫进行田间防效试验,试验结果表明,34%乙多·甲氧虫和6%乙基多杀菌素防治小菜蛾有较好速效性和持效性,药后第1d防效均高于50%,药后第11d防效高于90%;粘颗·苏云菌速效性较差,药后第1d防效为15.75%,虫口减退率仅为8.33%,但表现出较强的持效性,在调查期间效果持续增强,药后第11d虫口减退率达87.12%,防效达93.43%,为五种药剂中持效性最佳,同时对斜纹夜蛾、菜青虫有较好的兼治作用;5%阿维菌素和5%甲维盐效果不理想,防效低于80%.
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