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近年来,黔东南地区菜青虫发生较为严重,由其危害引起的产品质量下降和减产,直接影响到农户的经济收入。针对此情况,特采用15%乐·氯乳油在花菜上对菜青虫进行了药效试验,以期为本地区菜青虫的防治提供有效的科学依据。试验结果表明,15%乐·氯乳油对花菜菜青虫具有非常好的防防治效果,75 ml/667m2处理药第一次调查虫口减退率为85.07%,第一次调查虫口减退率为高达98.11%,第一次调查虫口减退率为为74.66%,其防治效果显著高于其它处理且持效期长,并且对作物无任何影响。
In recent years, cabbage caterpillars in southeastern Guizhou have more serious occurrences, and the quality of products caused by their damage has been declining, resulting in a direct impact on the economic income of farmers. In response to this situation, the use of 15% Le chlorine chlorine EC on cabbage was tested on efficacy in order to provide a reasonable basis for the prevention and treatment of cabbage caterpillars in the region. The results showed that 15% Leccurin had a very good preventive and curative effect on Pieris rapae. The first survey of 75 ml / 667m2 treatment resulted in a reduction rate of 85.07% in the first survey and the first survey showed that the reduction rate was as high as 98.11% In the first survey, the reduction rate of the population was 74.66%. Its control effect was significantly higher than that of other treatments and its persistence period was long, and had no effect on the crops.