Intercropping of Echinochloa frumentacea with Leguminous Forages Improves Hay Yields, Arbuscular Mycorrhizal Fungi Diversity, and Soil Enzyme Activities in Saline–Alkali Soil

Soil salinization is detrimental to crop growth, agricultural yields, and environmental protection. Echinochloa frumentacea (Roxb.) Link a pioneer species for the alteration of saline–alkali lands. In this paper, we examined effects intercropping between E. leguminous forages on saline land improvement in soil Hetao-Ningxia Plain, China. We found that increased diversity richness arbuscular mycorrhizal fungi (AMF) community rhizosphere frumentacea. Glomus was dominant genus where Glomeraceae, VTX00067, VTX000193, VTX000165 were species. Intercropping improved activities urease, sucrase, alkaline phosphatase, catalase. The hay yields correlated positively with enzyme activities, Chao1 index, ACE negatively total water-soluble salt content. Together, enhances AMF which provides an practice improving sustainability agro-ecosystem areas.