Abstract:Varying amounts of vermicomposts(5%~20%)were mixed with normal container nursery medium.Theeffects of vermicompost were studied on microbial populations in rhizosphere,root construction and activity,as wellas the growth and nutrient uptake of Liriodendron chinensis,using non-wave container nursery technique.The results showed that the addition of vermicompost in nursery medium increased the bacteria population and thetotal microorganism amount in rhizosphere of Liriodendron chinensis,while decreased the fungus populationsignificantly.However,vermicompost had no significant effect on actinomycetes amount.Vermicompostshowed beneficial effects on growth and construction of the roots of Liriodendron chinensis,especially theweight and ratio of fine roots.Additionally,more root activities were observed with vermicompost addition.The addition of vermicompost in container nursery medium greatly increased the dry matter accumulation ofroot,stem,and leaf of Liriodendron chinensis.However,no significant influence was found on the nitrogenand phosphorous contents,except for potassium content.Compared with normal container nursery medium,addition of 15% vermicompost increased the nitrogen,phosphorous and potassium uptake by 22.23%,15.58%and 26.66%,respectively.In summary,suitable ratio of vermicompost addition in nursery mediumbenefited the ecological environment,nursery effect,as well as the nutrients uptake and utilization of Liriodendron chinensis.Addition of 15%achieved the best benefits among all the treatments.