Results show that 90.7% of the 42 species examined are more or less colonized by AM fungi.In the roots of Erysimum bungei, Polygonatum sibiricum and Allium mongolicum, AM fungi is not detected.

• 结果表明：在调查的42种植物中，有90.；7%25的种类根系不同程度地受到AM真菌侵染，仅糖芥、玉竹、沙葱根系中没有观察到AM真菌结构。