50%烯啶虫胺防治稻飞虱田间药效试验

The Field Efficacy Trial of 50% Nitenpyram to Prevent Rice Hopper

50％烯啶虫胺WP防治稻飞虱田间药效试验表明，其剂量7．5、10g／667m^2，药后1、3、7、14d调查，防效为24．17％～96．81％，高于用量5g／667m^2的防效，与对照10％吡虫啉WP30g／667m^2防效相当。生产上推荐以50％烯啶虫胺7．5、10g／667m^2防治稻飞虱为宜。

In the paper, we studied the control effect of 50% Nitenpyram to prevent rice hopper. The results showed that the Nitenpyram dose of 7.5 or 10 g/667m^2 has a better effect than the Nitenpyram dose of 5 g/667m^2. Therefore, the Nitenpyram dose of 7.5 or 10 g/667m^2 has a good effect on preventing rice hopper in production.