在甘肃甘谷对供试小麦条锈菌生理小种不同抗性水平的3个当地主栽小麦品种进行了不同比例混合种植，结果表明，除感病品种兰天6号与抗病品种天选46以等比例混种处理外，其余各处理的相对防效均在60%以上，尤其是感抗比例在1 ∶ 3、1 ∶ 5混种组合下的相对防效达到80%以上。

Three local wheat cultivars of wheat stripe rust physiological races with different resistance levels were used in this study to mixed planting in different proportions in Gangu county of Gansu province . The results shows that, in addition to the treatment of Lantian 6 mixed with Tianxuan 46 in the 1 ∶ 1 ratio， the relative effect of each treatment were more than 60%， especially the treatments in the mixtures of susceptible and resistant cultivars in the 1 ∶ 3 and 1 ∶ 5 ratio， the relative control effect were more than 80% .

S512.1