The mycorrhizal development of six Testuca species in field including Jaguar 3,Jaguar 4,Hurricane,Kersich,Gold island and Prince in desert,and the correlation between mycorrhizal development and soil available phosphorus or soil available potassium were studied.The results showed that in all species the roots of the lawn grass plants,Hurricane plant exhibited better mycorrhizal colonization,and Jaguar 3 lowest.Kersich roots showed better mycorrhizal structures and Jaguar 3 lowest.Better mycorrhizal developm...