啶虫脒对禾谷缢管蚜的致死中浓度 LC_(50)为2.47μg/ml,对麦蚜的生物活性啶虫脒>抗蚜威。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,施药后3～7天,抗蚜威对麦蚜防治效果在90%以上,但10天后防效衰退,而啶虫脒每11.25g a.i./hm~2药后3～20天,防效都稳定在90%以上。 The lethal concentration of acetamiprid to S. avenae was 2.47 μg / ml, and the bioactivity against acetosygitc plants was acetamiprid> pirimicarb. Acetamiprid had a fast acting rate. After 1.5h, the death rate of aphids was nearly 90%, and the rate of aphid mortality was 100% at 24h. The persistence period was up to 20 days. The field trials showed that, after 3 to 7 days, Aphid control effect in more than 90%, but 10 days after the anti-efficacy decline, and Acetamiprid 11.25g ai / hm ~ 2 after 3 to 20 days, the control effect is stable at 90%.