Effects of reclaimed water irrigation and nitrogen fertilization on the chemical properties and microbial community of soil

查看全文 作　　者：GUO [1,2]Wei;Mathias N [3]Andersen;QI Xue-[1,4]bin;LI [1,4]Ping;LI Zhong-[1,4]yang;FAN Xiang-[1,4]yang;ZHOU [1,2]Yuan

机构地区：[1]Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences (CAA S), Xinxiang 453003, P.R. China;[2]Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China;[3]Department of Agroecology, Faculty of Science and Technology, Aarhus University, Tjele 8830, Denmark;[4]Key Laboratory of High-efficient and Safe Utilization of Agriculture Water Resources of CAAS, Xinxiang 453003, P.R. China

出　　处：《Journal of Integrative Agriculture》索引2017年第16卷第3期,共12页

基　　金：the financial support for this research from the National High-Tech R&D Program of China (2012AA101404);the National Natural Science Foundation of China (51209208, 51479201) 摘　　要：The ecological effect of reclaimed water irrigation and fertilizer application on the soil environment is receiving more attention.Soil microbial activity and nitrogen(N)levels are important indicators of the effect of reclaimed water irrigation on environment.This study evaluated soil physicochemical properties and microbial community structure in soils irrigated with reclaimed water and receiving varied amounts of N fertilizer.The results indicated that the reclaimed water irrigation increased soil electrical conductivity(EC)and soil water content(SWC).The N treatment has highly significant effect on the ACE,Chao,Shannon(H)and Coverage indices.Based on a 16S ribosomal RNA(16S rRNA)sequence analysis,the Proteobacteria,Gemmatimonadetes and Bacteroidetes were more abundant in soil irrigated with reclaimed water than in soil irrigated with clean water.Stronger clustering of microbial communities using either clean or reclaimed water for irrigation indicated that the type of irrigation water may have a greater influence on the structure of soil microbial community than N fertilizer treatment.Based on a canonical correspondence analysis(CCA)between the species of soil microbes and the chemical properties of the soil,which indicated that nitrate N(NO_3~–-N)and total phosphorus(TP)had significant impact on abundance of Verrucomicrobia and Gemmatimonadetes,meanwhile the p H and organic matter(OM)had impact on abundance of Firmicutes and Actinobacteria significantly.It was beneficial to the improvement of soil bacterial activity and fertility under 120 mg kg^(–1) N with reclaimed water irrigation. 关键词：土壤化学性质微生物群落结构再生水灌溉土壤微生物群落 RRNA基因施氮土壤理化性质典范对应分析

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Effects of reclaimed water irrigation and nitrogen fertilization on the chemical properties and microbial community of soil

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