本试验通过安排4.5%高效氯氰菊酯水乳剂3个不同剂量与4.5%高效氯氰菊脂乳油对照及清水对照试验,结果表明:4.5%高效氯氰菊酯水乳剂60g/667m2对大白菜菜青虫防效高,见效快,迟效性好,药后1d、3d、7d平均防效在95%以上,是值得建议推广的一种高效低毒农用杀虫剂,本着经济、安全、有效的原则,建议防治十字花科蔬菜菜青虫适宜浓度为50～60g/667m2。 The results showed that the 4.5% beta-cypermethrin emulsion 60g / 667m2 had high control effect on Chinese cabbage cabbage worm and quick response. The control effect of 4.5% beta-cypermethrin emulsion and control of 4.5% beta- Good delayed and good effect, the average anti-dominance of 1d, 3d and 7d after treatment is more than 95%, which is worthy of popularizing. It is a kind of high efficiency and low toxicity agricultural insecticide which is recommended to control Cruciferae with economical, safe and effective principle Vegetable cabbage caterpillar suitable concentration of 50 ~ 60g / 667m2.