利用植物源农药防治十字花科蔬菜菜青虫效果评价

Evaluation on Effect of Botanical Pesticides for Controlling Pieris rapae L

评价了植物源农药1.6%狼毒素水乳剂1 000倍,0.2%苦皮素乳油1 000倍,10%烟碱乳油1 000倍和0.5%楝素乳油1 500倍防治十字花科蔬菜菜青虫的效果.并将其与生物农药8 000IU/mg BT粉剂、抗生素类农药0.9%阿维菌素乳油和化学农药4.5%高效氯氰菊酯进行比较,分析其优缺点.结果表明,植物源农药防治菜青虫药后3～7 d防效为71.72%～100%,且具高效、低毒、无残留等特性,是理想的防治蔬菜菜青虫无公害药剂.

The effects of botanical pesticides were evaluated against cabbage caterpillar （Pieris rapae L） in field trail. Compared with 8000IU/mg BT D, 0.9% abamactin EC and 4.5% beta-cypermethrin, botanical pesticides 1.6% LIDS AS 1000 times dilution, 0.2% KIDS EC 1000 times dilution, 10% nicotin EC 1000 times dilution and 0.5% toosendanin EC times dilution can give an fine effect, with the control effect of 71.72 % to 100 % after 3 to 7 days of spraying. They are the harmless pesticides of control cabbage caterpillar （Pieris rapae L）.