由于甜菜夜蛾抗药性发展迅速 ,常规药剂防效很差 ,生物防治及其它防治手段尚未成熟 ,其发生后的控制仍然依赖于化学防治。为此在进行十字花科蔬菜害虫综合治理中 ,对常用的几种药剂进行了药效评价 ,以初步确定长沙菜区甜菜夜蛾抗药性水平 ,便于指导实际生产。1　材料与方法①试 Due to the rapid development of drug resistance of beet armyworm, the conventional pesticide has poor control effect, biological control and other control measures are not yet mature, and the control after its occurrence still depends on chemical control. To this end in the comprehensive management of cruciferous vegetable pests, the efficacy of several commonly used drugs were evaluated in order to initially determine the beet armyworm resistance of Changsha area, easy to guide the actual production. 1 Materials and methods ① test