【摘要】 对贵州省大方县夏秋反季节甘蓝菜青虫发生为害进行了调查及药剂防效试验。调查结果表明,甘蓝菜青虫消长呈现明显的双峰曲线,发生盛期出现在8月10日至9月14日,高峰日在8月25日和9月14日。5种农药中1.8%阿维菌素乳油、40%辛硫磷乳油和25%快杀灵乳油防效较好,防效分别为89.19%～97.27%,89.26%～94.33%和87.55%～90.26%。更多还原

【Abstract】 In 2006,an investigation and insecticides control experiment about the harmless of summer and autumn off-season cabbage worm’s growth was made in Dafang County,Guizhou Province,which showed that: there was an obvious two-peaks type appeared on cabbage worm’s growth and decedent and the happening major onset of it appeared form August 10th to September 14th,the hatching time were August 20th and September 9th. Five insecticides were selected to make the field defending test and from which we’ve screened out three types of high effective insecticides,they were: 1.8% abamectin cream,40% phoxim cream and 25% phoxim fenvalerate. Their efficiencies were: 89.19%-97.27%,89.26%-94.33% and 87.55%-90.26% respectively.更多还原