不同种类杀虫剂防治小菜蛾田间药效评价

The Control Effect Evaluate of Different Kinds of Insecticides to Plutella xylostella Linnaeus

通过对７类１１种杀虫剂田间药效试验，筛选出４种对小菜蛾具有优良防效的杀虫剂，即灭虫灵、虫螨克、抑太保，万灵。其中灭虫灵、虫螨克、抑太保具有低毒、高效、持效期长等特点，可作为小菜蛾首选杀虫剂使用。万灵、苏星一号、快杀灵、好年冬具有防效快特点，可与灭虫灵、虫螨克、抑太保在小菜蛾暴发年份交替使用，以延缓抗性的产生。

Four new-type insecticides selected from seven by field experiment,1% abamectin,1.8%abamectin,chlorfuazuron and methomyl,have good effect in preventing and controlling Plutella xylostella.Abamectin,chlorfuazuron and methomyl have the charactoristic of low toxioity,high efficiency and prolonged residual effect.They could be used as the best insecticides in controlling Plutella xylostella.The methomyl,phoxim,fenvalerate and carbosulfan's control effect showed fast.They could be used alternatively with abamectin and chlorfuazuron for inhibiting the incidence of resistance.