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[目的]为明确200 g/L吡虫啉SL、200 g/L丁硫克百威EC、50%吡蚜酮WG对棉蚜的防治效果,开展了3种药剂的田间防效试验。[结果]以200 g/L吡虫啉SL15~45 g a.i./hm2、200 g/L丁硫克百威EC 90~180 g a.i./hm2和50%吡蚜酮WG 60~90 g a.i./hm2剂量叶面喷雾,药后1、7 d防效分别为82.31%~92.02%、77.23%~95.31%、76.67%~91.11%和86.30%~96.71%、86.83%~96.53%、94.87%~98.73%。[结论]200 g/L吡虫啉SL和50%吡蚜酮WG持效期均在7 d以上,200 g/L丁硫克百威EC速效性较强。200 g/L吡虫啉SL、200 g/L丁硫克百威EC和50%吡蚜酮WG的推荐使用剂量分别为30~45、135~180、60~75 g a.i./hm2。
[Objective] The research aimed to determine the control effect of 200 g / L imidacloprid SL, 200 g / L dibutyramycin EC and 50% pymetrozine WG on cotton aphid. [Result] With the dosage of 200 g / L imidacloprid SL 15 ~ 45 g ai / hm2, 200 g / L carbosulfan EC 90 ~ 180 g ai / hm2 and 50% pymetrozine WG 60 ~ 90 g ai / The antifouling effects of topical spray and topiramate on days 1 and 2 after treatment were 82.31% -92.02%, 77.23% -95.31%, 76.67% -91.11% and 86.30% -96.71%, 86.83% -96.53% and 94.87% -98.73%, respectively. [Conclusion] The persistence period of 200 g / L imidacloprid SL and 50% pymetrozine WG were all above 7 days, and the 200 g / L carbosulfan EC was more effective. The recommended dosages of 200 g / L imidacloprid SL, 200 g / L carbosulfan EC and 50% pymetrozine WG were 30-45, 135-180 and 60-75 g a.i./hm2, respectively.