大连地区樱桃园根际土壤细菌群落功能多样性分析  

Analysis of the rhizosphere bacterial community and function diversity in cherry orchard of Dalian region

作　　者：吕德国[1] 侯爽[1] 秦嗣军[1] 刘灵芝[1,2] 马怀宇[1] 刘国成[1] 

机构地区：[1]沈阳农业大学园艺学院,沈阳110866 [2]沈阳农业大学土地与环境学院,沈阳110866

出　　处：《果树学报》2011年第5期797-801,共5页Journal of Fruit Science

基　　金：国家自然科学基金项目(30871688;30900967);辽宁省教育厅项目(2008631)

摘　　要：利用Biolog生态微平板法,分析了大连地区黏土、沙壤土、粗骨土3种不同质地土壤樱桃园微生物代谢活性及其功能多样性。结果表明,土壤微生物的数量、群落代谢活性、底物碳源利用数(S)、多样性指数(H)及均匀度指数(J)均为黏土>沙壤土>粗骨土,3种质地的土壤细菌碳源均以利用碳水化合物为主,而对芳香化合物和胺类化合物的利用喜好不同,其中黏土对芳香化合物的利用率相对较高,沙壤土和粗骨土对胺类化合物的利用率相对较高。说明,土壤质地可影响樱桃园的土壤微生物功能多样性,其中以黏土最丰富,沙壤土次之,粗骨土最差。3种土壤质地樱桃园的表土与根际土之间的土壤微生物群落代谢活性、土壤细菌碳源利用情况以及土壤细菌代谢功能多样性差异并不显著。由此可见,土壤质地是决定樱桃园土壤细菌群落功能多样性的主要因素。The microbial metabolic activity and functional diversities of sweet cherry orchards with clay soil,Sandy loam,Coarse soil in Dalian region were analyzed under Biolog Ecoplate method.The results showed that the amounts of soil microbe,microbial metabolic activity,Substrate richness（S）,Shannon＇s diversity index（H）and Evenness index（J）were clay soil〉Sandy loam〉Coarse soil,and the carbon sources with highest utilization efficiency by soil microbes was carbohydrate in three soil texture.Microbes in the clay soil utilized phenolic compounds with higher efficiency and microbes in sandy loam and coarse soil utilized amines with higher efficiency.The results indicate that soil texture influences soil microbial functional diversity in cherry orchard,and the highest in clay soil,followed by in sandy loam and in coarse soil.But no significant difference was found in microbial metabolic activity,bacterial efficiency of carbon sources,bacterial variety of metabolic activity of three kinds ofsoil texture.Thus,the major factor responsible for bacterial community function diversity in cherry orchards is soil texture.

关 键 词：樱桃园 土壤质地 土壤微生物 功能多样性 

分 类 号：S662.5[农业科学—果树学]