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50 % 稻丰按1 200 g/hm 2 的用量施药,对褐飞虱、二化螟在药后2 ~30d 的防效均明显优于单用扑虱灵450g/h m2 及杀虫单675 g/h m 2 的防效,药后30d 其对褐飞虱的防效为96 .0 % ,对二化螟的防效为73 .4 % ,且对水稻生长安全。
50% Dafeng was applied at the rate of 1 200 g / hm 2, and the control effects of BPH and STI were significantly better than that of the control group (450 g / h m2) and insecticidal single (675 g) / H m 2 of the anti-efficacy, 30d after the drug’s control of brown planthopper was 96. 0%, the control effect on the stem borer was 73. 4%, and the growth of rice is safe.