基于相对土壤质量指数法的铜梁区农田质量评价  

Evaluation of Farmland Quality in Tongliang District Based on Relative Soil Quality Index

作　　者：胡胜勇 詹雪萍 文玲 梁涛 张涛[2] 陶伟林 郑阳[2] HU Sheng-yong;ZHAN Xue-ping;WEN Ling(Tongliang District Agricultural Technology Extension Center,Chongqing 402560)

机构地区：[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

出　　处：《安徽农业科学》2023年第7期81-84,共4页Journal of Anhui Agricultural Sciences

基　　金：重庆市技术创新与应用发展专项面上项目(CSTB2022TIAD-GPX0011)。

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0~20 cm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。[Objective]To clarify the status of farmland soil quality in different areas of Tongliang District and reveal the sensitive factors affecting soil quality.[Method]The representative farmland soil of 0-20 cm soil layer in Tongliang District was selected as the research object.The distribution characteristics of soil physical and chemical properties were analyzed by statistical method,and the correlation between soil evaluation indexes was analyzed by correlation.The contribution rate of each index to soil quality was obtained by using the analytic hierarchy process.Finally,the farmland soil quality in different regions was compared by using the relative soil quality index method.[Result]Weakly acidic soil was the main soil in this region,and the variation coefficient of soil physical and chemical indexes were 31.79%-125.88%,the variation degree of the indexes from large to small was in order of available phosphorus,total phosphorus,organic matter,available potassium,total nitrogen,alkali-hydrolytic nitrogen,pH and total potassium.There was a positive correlation between all indexes,especially pH and each nutrient index.The relative soil quality index was 1.769-3.416,with an average value of 2.905.[Conclusion]This study is helpful to evaluate soil quality objectively and guide soil improvement scientifically.

关 键 词：农田 相对土壤质量指数法 相关性 土壤理化指标 

分 类 号：S151.9[农业科学—土壤学]