The invention relates to the technical field of remediation of soil-contaminated environments, in particular to a method for enhancing the
petroleum-contaminated
soil remediation capacity of phytolacca americana. Specifically, an
arbuscular mycorrhizal fungal inoculant is inoculated into a phytolacca americana growth substrate to enhance the
petroleum-contaminated
soil remediation capacity of phytolacca americana. Preferably, the
arbuscular mycorrhizal fungal inoculant is a glomus mosseae inoculant. According to the invention, glomus mosseae plays a role in promoting the mineral
nutrient absorption, growth and development of phytolacca americana, and enhances the capacity of the phytolacca americana in degrading
petroleum pollution in soil. Specifically, after glomus mosseae is inoculated,the
biomass of phytolacca americana is increased by 38.55%, and a petroleum degradation rate is increased by 50.00%. By inoculating glomus mosseae, the
biomass of phytolacca americana in petroleum-contaminated soil can be remarkably improved, and the petroleum
hydrocarbon degradation rate of phytolacca americana in the petroleum-contaminated
soil remediation process is remarkably increased. Moreover, the method has the advantages of no negative influence on the environment, no secondary
pollution, good remediation effect and low cost.