朱砂叶螨生物防治药剂的筛选

Screening of the biological control agent to control Tetranychus cinnabarinus

朱砂叶螨(Tetranychus cinnabarinus)是一种危险性害虫,为寻求有效的生物防治药剂,试验选择3种生物药剂和酒精合剂在大田豇豆上对朱砂叶螨成虫进行药效试验。结果表明:酒精合剂及森得保1 500倍液的防效在7 d时可达到100%;1.8%阿维菌素乳油1 000倍液及1 500倍液、森得保可湿性粉剂1 000倍液及2 000倍液、1.3%苦参碱水剂1 000倍液的防效在第10天时可达到100%;而1.8%阿维菌素乳油在10 d的虫口减退率为96%。由此可见,酒精合剂及森得保1 500倍液的效果最好。

The carmine spider mite is a kind of dangerous pest. In order to seek an effective biological agent, the author chose three kinds of agents and alcohol mixture to conduct the carmine spider mite adults efficacy test on cowpea in the field. The test results showed that the control effects of alcohol mixture and 1 500 times of Sendebao WP on the seventh day reached 100%. The control effects of 1 000 times and 1 500 times of 1.8%Avermectin EC, 1 000 times and 2 000 times of Sendebao WP, 1 000 times of 1.3%matrine agent reached 100%on the tenth day. While the reduce rate of 1.8%Avermectin EC on the tenth day reached 96%. Thus, the alcohol mixture and 1 500 times of Sendebao WP got the best effects.