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用抗菌素防治病虫害已有较长的历史,但用庆丰霉素抗菌素防治病虫害则是近几年研究成功的新农药。我们用它的溶液对菜粉蝶Pierisrapae(Linnaeus)、萝卜蚜Lipaphis erysimi(Kaltenbach)、二化螟Chilo suppressalis Walker及稻苞虫Parnara guttata Bremer et Grey进行毒效试验,发现对某些害虫有一定毒力,现简介如下。 对萝卜蚜的试验效果 共进行了二次试验:第一次,在甘蓝地进行。分别用庆丰霉素80、100、300、500ppm和清水对照处理(下同),喷药一次。浓度300ppm时,蚜虫下降率仅53.88％,毒力低。第二次,在萝卜地进行。分别
The use of antibiotics to control pests and diseases has a long history, but the use of anti-pest and pest control agents is the success of new pesticides in recent years. We tested the toxic effects of Pierisrapae (Linnaeus), Lipaphis erysimi (Kaltenbach), Chilo suppressalis Walker and Parnara guttata Bremer et Gray, and found that it has certain toxicity to some pests Now the introduction is as follows. A second test of radish aphid’s test results were carried out: for the first time, carried out in cabbage. Respectively with 80,100,300,500 ppm of jenfengmycin and water control (same below), spraying once. Concentration of 300ppm, aphid decline rate of only 53.88%, low toxicity. The second time, carried out in the radish. respectively