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2 Ordos Agriculture and Animal Husbandry Investment and Development Company Limited, Ordos, Inner Mongolia 017010, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309573302650237644, articleId=1309573302226612939, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=氮肥施用对我国草地牧草生长和土壤养分影响的Meta分析, columnId=1309565024058835950, journalTitle=草地学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=为探究牧草生长和草地土壤养分对氮肥施用的响应，并促进牧草产量提升与土壤养分平衡，本研究基于筛选出的62篇文献（629组有效数据），采用Meta方法分析了不同气象条件（气候区、年平均降水量和年平均气温）、土壤条件（碱解氮、全氮和有机质含量）以及氮肥施用量（低量、中量和高量）条件下氮肥施用对牧草生长及土壤养分的影响。研究结果表明：氮肥添加促进了牧草生长，增加了土壤养分含量，其中牧草株高和干物质量分别增加25.7%和58.4%，全氮、碱解氮和有机质含量分别增加21.8%，19.3%和9.0%。在湿润且低温地区施氮肥对牧草的促进效果最佳；在湿润且高温地区施氮肥更有利于增加土壤养分含量。贫瘠草地施氮肥对牧草干物质量的促进效果更明显，且少量氮素添加就有很好的效果。本研究的结果反映出氮肥添加对牧草和土壤产生了积极效果，并且可以为草地施肥决策提供依据。, authors=谢馨仪¹, 陈冲¹, 李沁峰², 白杨², 商建英¹, 王祥¹, authorsList=谢馨仪, 陈冲, 李沁峰, 白杨, 商建英, 王祥, authorCompany=1 中国农业大学土地科学与技术学院, 北京 100193;
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