不同药剂防治水稻稻飞虱效果评价

Evaluation on Control Effects of Different Pesticides on Rice Planthopper

为了筛选防治稻飞虱的有效药剂,选用呋虫胺等7种农药单剂对水稻稻飞虱进行田间药效试验。结果表明,呋虫胺20%可湿性粉剂、噻虫嗪25%水分散粒剂、噻嗪酮40%悬浮剂对靶标具有较好的防治效果和速效性,药后15d,防效在87.7%以上。吡蚜酮25%可湿性粉剂药后7~15d防效理想,在90.9%以上。异丙威20%乳油和敌敌畏90%乳油对靶标速效性较好,但持效期较短。

To select effective insecticides to control rice planthopper, seven pesticide products containing single active ingredient including dintefuran, thiamethoxam, imidacloprid, buprofezin, pymetrozine, isoprocarb and dichlorvos were applied in rice field efficacy trials. The results showed that dinotefuran 20% WP, thiamethoxam 25% WG, buprofezin 40% SC had good control effects and were quick-acting on the target, and the control effects were more than87.7% 15 days after application. Pymetrozine 25% WP provided ideal contro 17 ~15 days after application with the control effects of above 90.9%. Isoprocarb 20% EC and dichlorvos 90% ECacted quickly on the target, but provided short persistence period.