生物有机肥对板栗土壤微生物群落代谢活性的影响  

Effects of biological organic fertilizer on microbial community’s metabolic activity in a soil planted with chestnut (Castanea mollissima)

作　　者：陈琳[1] 谷洁[2,3] 胡婷[2] 高华[2,3] 陈智学[1] 秦清军[2,3] 王小娟[2] 

机构地区：[1]西北农林科技大学理学院,陕西杨凌712100 [2]西北农林科技大学资源环境学院,陕西杨凌712100 [3]陕西省循环农业工程技术研究中心,陕西杨凌712100

出　　处：《应用生态学报》2013年第6期1627-1632,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(40871119;41171203);农业部"948"项目(2010-Z20)资助

摘　　要：2011年在陕西省柞水县下梁镇沙坪村板栗园,设置对照、施用复合肥和施用生物有机肥3个处理,于板栗收获期采集土壤样品,并运用Biolog方法研究了生物有机肥对土壤微生物群落代谢能力的影响.结果表明:生物有机肥处理的微生物群落碳源利用率(AWCD)、Shannon均匀度、丰富度指数和McIntosh指数均显著高于对照和复合肥处理;与对照相比,施用生物有机肥处理的土壤微生物对糖类和多聚物类碳源的利用能力增强,而施用复合肥处理对各类碳源的利用能力均较弱.主成分分析表明,不同施肥处理的土壤微生物群落明显不同,起分异作用的碳源主要为糖类和氨基酸类.A field experiment was conducted in Zhashui County of Shaanxi Province, Northwest China in 2011 to study the effects of biological organic fertilizer on the microbial community’s metabolic activity in a soil planted with chestnut （Castanea mollissima）. Three treatments were installed, i.e., control, compound fertilizer, and biological organic fertilizer. Soil samples were collected at harvest, and the metabolic activity was tested by Biolog method. In the treatment of biological organic fertilizer, the average well color development, Shannon evenness, richness, and McIntosh indices of microbial community were all significantly higher than the other two treatments. As compared with the control, applying biological organic fertilizer improved the ability of soil microbes in utilizing the carbon sources of carbohydrates and polymers, while applying compound fertilizer was in opposite. The principal component analysis demonstrated that there was an obvious difference in the soil microbial community among different treatments, mainly depending on the species of carbohydrates and amino acids.

关 键 词：板栗 生物有机肥 土地微生物群落 碳源利用率 

分 类 号：S664.2[农业科学—果树学] S154.3[农业科学—园艺学]