5种无公害农药防治杜鹃冠网蝽的室内药效试验

Laboratory Efficacy Test of 5 Kinds of Pollution-free Pesticides on the Control of Stephanitis pyriodes

为筛选出防治杜鹃冠网蝽的理想药剂,选用5种无公害农药进行室内药效试验。结果表明:供试药剂对杜鹃冠网蝽的防治效果良好,施药7 d后的校正死亡率均达到100%,但各药剂对杜鹃冠网蝽的防治效果不一,在速效性和持效性方面亦存在差异,40%毒死蜱EC速效性最好,2.5%高效氯氟氰菊酯EW持效性最好,其次为4.5%高效氯氰菊酯EW和1.8%阿维菌素ME,最差为25 g/L溴氰菊酯。进行杜鹃冠网蝽防治时,应首选40%毒死蜱EC,并注意药剂的轮用和混用。

In order to screen out the ideal medicament for the control of Stephanitis pyriodes,5 kinds of pollution-free pesticides were selected for the laboratory efficacy test.The results showed that the control effect of the tested pesticides was good,and the corrected mortality was 100%after 7 days of application,but the control effect of each pesticide was not the same,and there were differences in quickness and sustained effectiveness.40%chlorpyrifos EC was the best in the quickness effects,2.5%lambda-cyhalothri EW was the best in the sustained effectiveness,the next were 4.5%cypermethrin EW and 1.8%abamectin ME,and the worst was 25g/L deltamethrin.40%chlorpyrifos EC should be selected as the first choice for the control of Stephanitis pyriodes,and the rotation and mixture of insecticides should be paid attention to.