Effects of Arbuscular Mycorrhizal Fungi Communities on Soil Quality and the Growth of Cucumber Seedlings in a Greenhouse Soil of Continuously Planting Cucumber  

作　　者：LI Yan CHEN Ying-Long LI Min LIN Xian-Gui LIU Run-Jin 

机构地区：[1]Institute of Mycorrhizal Biotechnology,Qingdao Agricultural University,Qingdao 266109(China) [2]State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing210008(China) [3]School of Earth and Environment,The University of Western Australia,Perth 6009(Australia)

出　　处：《Pedosphere》2012年第1期79-87,共9页土壤圈（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 30871737);the 2010 Open Foundation of State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences(No. Y052010038)

摘　　要：A pot experiment was performed to determine the effects of arbuscular mycorrhizM fungi （AMF） communities on soil properties and the growth of cucumber seedlings in a degraded soil that had been used for continuous cucumber monoculture in a greenhouse for 15 years. In the experiment, AMF communities （created by combining various AMF species that were found to be dominant in natural farm soil） were inoculated into the degraded soil, and then the soil was planted with cucumber. Inoculation with AMF communities did not affect soil pH but increased soil aggregate stability and decreased the concentrations of salt ions and electrical conductivity （EC） in the soil. Inoculation with AMF communities increased the numbers of culturable bacteria and actinomycetes but reduced the number of fungi. AMF communities increased plant growth, soluble sugar content, chlorophyll content, and root activity compared to non-mycorrhizal or a single AMF species treatments. Improvements of soil quality and plant growth were greatest with the following two communities： Glomus etunicatum ＋ G. mosseae ＋ Gigaspora margarita ＋ Acaulospora lacunosa and G. aggregatum ＋ G. etunicatum ＋ G. mosseae ＋ G. versiforme ＋ G. margarita ＋ A. lacunosa. The results suggested that certain AMF communities could substantially improve the quality of degraded soil.A pot experiment was performed to determine the effects of arbuscular mycorrhizal fungi(AMF) communities on soil properties and the growth of cucumber seedlings in a degraded soil that had been used for continuous cucumber monoculture in a greenhouse for 15 years.In the experiment,AMF communities(created by combining various AMF species that were found to be dominant in natural farm soil) were inoculated into the degraded soil,and then the soil was planted with cucumber.Inoculation with AMF communities did not affect soil pH but increased soil aggregate stability and decreased the concentrations of salt ions and electrical conductivity(EC) in the soil.Inoculation with AMF communities increased the numbers of culturable bacteria and actinomycetes but reduced the number of fungi.AMF communities increased plant growth,soluble sugar content,chlorophyll content,and root activity compared to non-mycorrhizal or a single AMF species treatments.Improvements of soil quality and plant growth were greatest with the following two communities:Glomus etunicatum + G.mosseae + Gigaspora margarita + Acaulospora lacunosa and G.aggregatum + G.etunicatum + G.mosseae + G.versiforme + G.margarita + A.lacunosa.The results suggested that certain AMF communities could substantially improve the quality of degraded soil.

关 键 词：enzyme activities microbial community protected cultivation RHIZOSPHERE soluble sugar 

分 类 号：S642.2[农业科学—蔬菜学] Q949.32[农业科学—园艺学]