啶虫脒、吡虫啉、抗蚜威对禾谷缢管蚜的 Ｌ Ｃ５０ 分别为２ ．４７ 、３ ．７２ 、２ ．９１μｇ／ ｍｌ。啶虫脒作用速率快，药后１ ．５ｈ ，蚜虫死亡率近９０ ％ ，２４ｈ 达１００ ％ ；其持效期长达２０ 天；田间试验表明啶虫脒对麦蚜防效最高，用量１１２５ｇ（ａ ．ｉ．）／ｈ ｍ ２ ，药后３ ～２０ 天，防效稳定在９０ ％ 以上。吡虫啉的防治效果与用量相关，用量２２５ｇ（ａ ．ｉ．）／ｈ ｍ ２ 以上，３ ～２０ 天的防效在９０ ％ 左右，但１５ｇ（ａ ．ｉ．）／ｈ ｍ ２ 以下对麦蚜控制效果不佳 Acetamiprid, imidacloprid and pirimicarb had L C50 values ​​of 2 against S. avenae. 47, 3. 72, 2. 91 μg / ml. Acetamiprid effect fast, after drug 1. 5h, the mortality of aphids was nearly 90% and reached to 100% at 24 h. The persistence period was up to 20 days. The field test showed that Acetamiprid had the highest control effect on wheat aphid, with the dosage of 11.25 g a.i./h m 2 , 3 to 20 days after drug, anti-efficacy stable at 90%. The control effect of imidacloprid was related to the dosage. The dosage of 225g (a · i.) / Hm 2 was above 90% for 3 ~ 20days, but the effect of 15g (a · i ·) / hm 2 Wheat aphid control effect is not good