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为检测吡蚜酮与异丙威复配制剂对水稻褐飞虱的田间防效,特进行了田间防效试验,结果表明:30%吡蚜·异丙威可湿性粉剂300、450、600g/hm2对水稻褐飞虱的防效(1～14d)为86.82%～99.49%;其速效性明显超过25%吡蚜酮可湿性粉剂300g/hm2,持效性显著超过20%异丙威乳油2 250mL/hm2。吡蚜酮、异丙威混配不但弥补了其单剂速效性差或持效性短的不足,而且能避免和减缓害虫产生抗药性,提高药剂防治效果。30%吡蚜·异丙威可湿性粉剂对水稻安全,适宜用量为300～450g/hm2。
In order to test the field control efficacy of pymetrozine and isoprocarb against rice brown planthopper, the field control efficacy test was conducted. The results showed that 30% pymetrozine and isoprocarb WP 300,450 and 600 g / hm2 The control effect of Nilaparvata lugens (Nilaparvata lugens) was 86.82% -99.49% for 1 ~ 14d. The fast-acting efficiency of Nilaparvata lugens was obviously higher than that of 25% pymetrozine WP 300g / hm2, and the retention efficiency was significantly higher than that of 20% BAC 2 250mL / hm2. Pymetrozine and isoproxil not only make up for the shortcomings of its single-dose or short-acting, but also can avoid and slow down the resistance of pests and improve the control effect of pesticides. 30% pymetrozine and isoprocarb wettable powder is safe for rice, the suitable dosage is 300 ~ 450g / hm2.