用活体生物测定法测定了腈菌唑与三唑酮及两者不同配比对小麦白粉病菌的毒力,从中筛选出了腈菌唑与三唑酮复配防治小麦白粉病菌的最佳配比为1:5,该配比的共毒系数达284.87。据此加工的12%复方腈菌唑乳油经山东、河北两地大田药效试验证明:该制剂667m~2用量1030ml,发病初期喷药,一周后喷第二次药,即可完全控制小麦白粉病为害,该剂具有明显治疗和保护作用,兼治谱广,增效明显,持效期长,对作物安全。 The bioassay was used to determine the mycotoxazole and triadimefon and the different proportions of the two against powdery mildew, and the optimum ratio of myclobutanil and triadimefon against wheat powdery mildew was screened out 1: 5, the ratio of co-toxicity coefficient of 284.87. According to the processing of 12% compound myclobutanil EC via Shandong, Hebei field trials proved that: the preparation of 667m ~ 2 dosage of 1030ml, the early onset of spraying, a week after spraying the second drug, you can completely control wheat flour Disease damage, the agent has obvious therapeutic and protective effects, both broad spectrum, significant efficiency, long duration, the crop safety.