10%烯啶虫胺水剂和25%噻嗪酮可湿性粉剂混配对水稻褐飞虱的防效

Control Effect of the Mixture of 10% Nitenpyram AS and 25% Buprofezin WP to Nilaparvata lugens(Stl) of Rice

采用10%烯啶虫胺水剂、25%的噻嗪酮可湿性粉剂2种杀虫剂及其复配药剂对褐飞虱进行了田间试验,结果表明:10%烯啶虫胺水剂(有效成分36 g/hm2)对褐飞虱有较好的速效性和持效性,药后3 d和7 d的防效分别达到了84.92%和96.58%;10%烯啶虫胺水剂∶25%噻嗪酮可湿性粉剂=1∶9(有效成分75 g/hm2)7 d后的防治效果较好,防效为92.34%,明显高于25%噻嗪酮可湿性粉剂(有效成分112.5g/hm2)的防效。

The control effect of the mixture of 10% nitenpyram AS and 25% buprofezin WP to field population of Nilaparvata lugens （stal）was determined.The results showed that three days and seven days after application the control effect of 10%nitenpyram （effective constituent 36 g/hm2） was 84.92% and 96.58% respectively.The control effect of mixture of 10% nitenpyram AS and 25% buprofezin WP ratio=l：9 （effective constituent 75 g/hm2） was 92.34% seven days after application ,which was much higher than that of 25% buprofezin（effective constituent 112.5 g/hm2）.