80%吡蚜酮·烯啶虫胺对水稻稻飞虱田间药效试验

Field efficacy trial of 80% pymetrozine·nitenpyram on controlling rice planthopper

对试验药剂80%吡蚜酮·烯啶虫胺WG和对照药剂25%噻嗪酮WP防治稻飞虱效果进行了田间药效试验,结果表明:80%吡蚜酮·烯啶虫胺WG对水稻褐飞虱和白背飞虱具有很好的防治效果,速效性好、持效期长,且对水稻安全。每667 m2用药量为12 g时,药后3 d、7 d、14d、21 d防效分别达84.97%、89.19%、91.26%、92.28%;极显著优于对照药剂25%噻嗪酮WP,生产上可大面积推广应用。

A field efficacy experiment was conducted to study the effects of 80% pymetrozine · nitenpyram WG on controlling rice planthopper, with 25% buprofezin WP as control. The results showed that 80% pymetrozine · nitenpyram WG could efficiently control blown planthopper and white-blacked planthopper in paddy field with high speed, long term and high safety. When the dosage was at 12 g per 667 m2, the control efficacy reached 84.97%, 89.19%, 91.26%, 92.28%, respectively at 3, 7, 14, and 21 d after application, which were significantly higher than that of 25% buprofezin WP, it showed that 80% pymetrozine · nitenpyram WG could be widely applied in production.