2006年贵州省赫章县秋季小麦条锈病调查

为了解中国新发现的小麦条锈病菌越夏区贵州省赫章县小麦条锈病秋季发生情况,2006年秋季笔者主要对该县古基乡、野马川镇、六曲河镇进行了调查,共调查119块地,自生麦病田率为55%,秋播小麦病田率为20.20%。古基乡发病较多,自生麦苗上有多个发病中心,有的秋播小麦田块亦呈现病叶较集中现象。在海拔1660-1910m范围内,都有小麦条锈病发生,说明当地越夏菌源能够为本地区秋苗发病提供充足菌量。对进一步研究内容进行了讨论并提出了赫章县小麦条锈病治理措施。

Investigation on Wheat Stripe Rust in Autumn 2006 in Hezhang County of Guizhou Province

In order to know the occurrence patterns of wheat stripe rust during autumns in Hezhang, Guizhou, one oversunmmering area of wheat stripe rust pathogen was discovered recently, investigation was mainly conducted in autumn 2006 in Guji, Yemachuan and Liuquhe. The investigated fields were totally 119 plots. Disease field rate of volunteer wheat and autumn wheat seedlings were 55 percent and 20.20 percent, respectively. In Guji, there were many disease focuses in volunteer wheat fields and diseased leaves were concentrated in some autumn-sowed wheat fields. Wheat stripe rust occurred between 1660m and 1910m in elevation. It indicated that local oversummering inoculum source area could provide enough pathogen for disease occurrence in autumn. Moreover, further researches on wheat stripe rust in this area were discussed and management measures of this disease in Hezhang were put forward.