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毒力测定结果表明 ,苦豆子和乌头生物碱对桃蚜都有较高的毒力 ,两者的致死中浓度分别为 12 7 72 μg/ g和 16 1 2 5 μg/g。田间防治试验表明 ,两种生物碱在 6 0 0 μg/ g和 30 0 μg/g下对桃蚜均有良好的控制作用 ,它们的校正虫口减退率防治后 2d在 84%～ 89% ,防后 3d达 89%～ 95 %。
Toxicity test results showed that Sophora alopecuroides and Aconitum alkaloids had higher virulence to Myzus persicae, the lethal concentrations of them were 12 7 72 μg / g and 16 1 25 μg / g, respectively. Field control experiments showed that both alkaloids had good control effects on Myzus persicae at the rates of 600 μg / g and 300 μg / g, and their corrected rates of population decline were 84% ~ 89% after 2 d After the 3d reached 89% ~ 95%.