中文摘要：

2005--2008年调查了内蒙古中西部地区7个盟市的20个春小麦种植区，共采集分离并鉴定了255份根际土壤和根系。调查结果表明，禾谷孢囊线虫（Heerodera avenaeWoll．）在呼和浩特市、乌兰察布市、包头市、巴彦淖尔市、鄂尔多斯市、锡林郭勒盟等地区都有分布。其中，在乌兰察布市的察哈尔中旗、呼和浩特市的内蒙古农科院和内蒙古农业大学农场禾谷孢囊线虫虫口密度最大，每250g土壤的孢囊平均含量分别达到了38．4、29．4个和16．4个。

英文摘要：

Through sampling, extracting and identifying, it was found that Heterodera avenae was distributed in Hohhot, Baotou, Wulanchabu, Bayannur, Erdos and XiIinghaote. There were more cysts in Chahaerzhongqi of Wulanchabu, Inner Mongolia Academy of Agricultural Sciences and the farmlands of Inner Mongolia Agricultural University than in other places, and the average number of cysts was 38. 4, 29. 4 and 16. 4 per 250 gram soil, respectively.