土壤学报2023，Vol.60Issue(6)：1788-1798,11.DOI:10.11766/trxb202205150255
稻虾种养新模式对稻田土壤肥力和微生物群落结构的影响
Effects of a New Rice-Shrimp Farming Model on Soil Fertility and Microbial Community Structure in Paddy Field
摘要
Abstract
[Objective]This study was designed to explore the impact of a new rice-shrimp farming model(NRS)on soil fertility and microbial community composition in paddy field.[Method]Three different farming treatments:new rice-shrimp farming model(NRS),traditional rice-shrimp farming model(TRS)and rice monoculture(CK)were set up,with CK as control.The paddy field physicochemical indexes and microbial diversity and community structure were determined by using the soil agrochemical analysis method and 16S rDNA amplicon high-throughput sequencing technology.[Result]Compared with CK and TRS,NRS significantly improved the contents of soil organic matter,available K,available P and pH.NRS significantly increased the microbial diversity and species richness.A total of 32 phyla,80 classes,202 orders,347 families and 491 genera of bacterial groups were detected in the paddy field of three models.The dominant bacterial phyla were Proteobacteria,Acidobacteriota,Chloroflexi,Verrucomicrobiota and Desulfobacterota.Compared with CK,NRS changed the composition of the soil microbial community.Among the bacterial dominant phyla,the relative abundances of Acidobacteria,Chloroflexi and Verrucomicrobiota were increased by 30.89%,36.38%and 2.16%,while the relative abundance of Proteobacteria and Desulfobacteria decreased by 17.96%and 58.59%,respectively.Compared with TRS,NRS also changed the composition of the soil microbial community.Among the bacterial dominant phyla,the relative abundances of Desulfobacteria increased by 14.93%,while the relative abundance of Chloroflexi,Verrucomicrobiota,Proteobacteria and Acidobacteria decreased by 39.29%,37.42%,16.27%and 6.81%,respectively.Correlation analysis showed that soil organic matter,available potassium,available phosphorus,available nitrogen and pH were the main physicochemical factors affecting the structure of soil microbial community in paddy field.[Conclusion]The new rice-shrimp farming model is conducive to improving soil fertility,significantly improving soil microbial diversity and altering microbial community structure.The results of this study have certain guiding significance and reference for the demonstration and promotion of the new rice-shrimp farming model.关键词
稻虾种养/土壤肥力/微生物群落结构Key words
New rice-shrimp farming/Soil fertility/Microbial community structure分类
农业科技引用本文复制引用
赖政,肖力婷,赖胜,杨慧林,倪才英,阳文静,简敏菲..稻虾种养新模式对稻田土壤肥力和微生物群落结构的影响[J].土壤学报,2023,60(6):1788-1798,11.基金项目
国家自然科学基金项目(42167006、41967055)、江西省水利科学院江西省鄱阳湖水资源与环境重点实验室开放研究基金项目(2020GPSYS03)和江西省自然科学基金项目(20212BAB203023)资助Supported by the National Natural Science Foundation of China(Nos.42167006,41967055),the Open Research Project of Key Laboratory of Poyang Lake Water Resources and Environment of Jiangxi Province in Jiangxi Academy of Water Science and Engineering(No.2020GPSYS03),and the Natural Science Foundation Jiangxi Province(No.20212BAB203023) （42167006、41967055）
