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用50%吡蚜·异丙威WP 450g/hm2,600g/hm2,750g/hm2,与25%吡蚜酮WP 300g/hm2进行防治水稻褐飞虱效果对比。试验期间观察,各药剂处理区与空白对照区内水稻生长正常,未出现不良影响,试验药剂对水稻生长安全,对周围蜘蛛、黑肩绿盲蝽等天敌影响不明显。但50%吡蚜.异丙威WP600～750g/hm2防治水稻褐飞虱有更好的防效,药后1d的防效可达67.13%～67.25%,药后3d的防效可达73.48%～75.16%,药后10d防效可达87.1%～90.73%,对水稻安全。
The control efficacy of 50% pymetrozine and isoprocarb WP 450g / hm2, 600g / hm2, 750g / hm2 and 25% pymetrozine WP 300g / hm2 for controlling Nilaparvata lugens (Nilaparvata lugens) were compared. During the experiment, the growth of rice in each treatment area and blank control area was normal without any adverse effects. The test agents had no significant effect on the growth of rice and the natural enemies such as the surrounding spiders and Apodemus agrarius. However, 50% of the imidacloprid-imidacloprid-imidacloprid WP600 ~ 750g / hm2 had a better control effect against the brown planthopper, the control effect was 67.13% ~ 67.25% on the 1st day after treatment and 73.48% ~ 75.16 %, 10d after drug control effect of up to 87.1% ~ 90.73%, the safety of rice.