基于相对土壤质量指数法的铜梁区农田质量评价胡胜勇1,詹雪萍1,文玲1,梁涛2,3*,张涛2,陶伟林2,郑阳2(1.铜梁区农业技术推广中心,重庆402560;2.重庆市农业科学院,重庆401329;3.西南大学,重庆400715)摘要[目的]明确铜梁区不同区域农田土壤质量状况,揭示影响土壤质量的敏感因子。[方法]选择铜梁区具有代表性的农田0~20cm土层土壤作为研究对象,利用统计法分析该区域土壤理化特性分布特征,并利用相关性分析土壤各评价指标之间的关联性,借助层次分析法得到各指标对土壤质量的贡献率,最后利用相对土壤质量指数法对比不同区域农田土壤质量状况。[结果]该区域主要以弱酸性土壤为主,土壤理化指标变异系数为31.79%~125.88%,变异程度由大到小的指标依次为有效磷、全磷、有机质、速效钾、全氮、碱解氮、pH、全钾;各指标之间均为正相关,尤其pH与各养分指标之间关联性较大;相对土壤质量指数为1.769~3.416,平均值为2.905。[结论]该研究有助于客观地评价土壤质量以及科学指导土壤改良。关键词农田;相对土壤质量指数法;相关性;土壤理化指标中图分类号S151.9文献标识码A文章编号0517-6611(2023)07-0081-04doi:10.3969/j.issn.0517-6611.2023.07.020开放科学(资源服务)标识码(OSID):EvaluationofFarmlandQualityinTongliangDistrictBasedonRelativeSoilQualityIndexHUSheng-yong,ZHANXue-ping,WENLingetal(TongliangDistrictAgriculturalTechnologyExtensionCenter,Chongqing402560)Abstract[Objective]ToclarifythestatusoffarmlandsoilqualityindifferentareasofTongliangDistrictandrevealthesensitivefactorsaf-fectingsoilquality.[Method]Therepresentativefarmlandsoilof0-20cmsoillayerinTongliangDistrictwasselectedastheresearchobject.Thedistributioncharacteristicsofsoilphysicalandchemicalpropertieswereanalyzedbystatisticalmethod,andthecorrelationbetweensoilevaluationindexeswasanalyzedbycorrelation.Thecontributionrateofeachindextosoilqualitywasobtainedbyusingtheanalytichierarchyprocess.Finally,thefarmlandsoilqualityindifferentregionswascomparedbyusingtherelativesoilqualityindexmethod.[Result]Weaklya-cidicsoilwasthemainsoilinthisregion,andthevariationcoefficientofsoilphysicalandchemicalindexeswere31.79%-125.88%,thevaria-tiondegreeoft...