Abstract:Based on the uranium-contaminated soil around typical uranium mines, the plant, Miscanthus floridulus, around a uranium mine was selected to analyze the effects of combination of chelator and AM fungi on plant biomass, uranium enrichment, soil pH value and nutrient elements. The results show that citric acid (CA) and Glomus mosseae (Gm) promote the growth of Miscanthus floridulus and uranium enrichment, while the combination of the two has the most obvious effect. Although the application of CA can reduce the pH value of soil, the mycorrhizal symbiotic system formed by inoculating Gm and Miscanthus floridulus can adapt to the acidic soil environment through self-regulation, and it also effectively promote the absorption of mineral nutrients N, P and K. The SEM morphologies of rhizosphere soil and plant ash samples show that the surface attachment particles in the combined treatment group are larger and denser, with the best repair effect. Combined treatment of plants with chelating agents and AM fungi can effectively repair uranium contaminated soil.