中国农学通报2025，Vol.41Issue(28)：68-77,10.
阳江市农用地土壤肥力与硒含量特征分析及综合质量评价
Analysis of Soil Fertility and Selenium Content Characteristics and Comprehensive Quality Evaluation of Agricultural Land in Yangjiang City
摘要
Abstract
To clarify the current status of soil fertility and selenium(Se)content in agricultural lands of Yangjiang City,elucidate their correlation,and establish a multi-dimensional'Se-fertility'quality evaluation system,thereby providing data support and scientific basis for optimizing farmland management and developing Se-rich agriculture in the region.Based on agricultural layout of Yangjiang,23 representative farmland areas were systematically selected across Jiangcheng District,Yangdong District,Yangxi County,and Yangchun City,with 70 soil samples being collected.Soil physicochemical properties and Se distribution characteristics were analyzed,and a comprehensive soil quality evaluation system integrating soil fertility and Se content was developed.The results showed that the agricultural soils in the study area of Yangjiang City had a relatively high sand content,and the textures were mainly sandy loam and sandy clay loam,which were slightly acidic.Soil fertility was generally characterized by moderate-to-high levels of organic matter,total nitrogen,and available potassium,along with extremely abundant available phosphorus.The total Se content ranged from 0.12 to 1.43 mg/kg(mean:0.47 mg/kg),while the available Se content ranged from 0.01 to 0.15 mg/kg(mean:0.047 mg/kg).Se-rich soils accounted for 57.1%of the study area,and soils with medium-to-high Se levels reached 94.3%.Additionally,soil texture and organic matter content significantly influenced total Se,while soil texture,available phosphorus,and pH were the main physicochemical factors affecting available Se.The multi-dimensional'Se-fertility'soil quality index for the study area was 0.299,and individual indicator indices ranked as follows:available phosphorus>total Se/available Se>available potassium>organic matter>total nitrogen.The study area possessed inherent advantages in naturally Se-rich agricultural land resources,providing a solid foundation and potential for developing Se-rich agriculture.To enhance the comprehensive quality of agricultural land in Yangjiang City,it is essential to maintain the existing advantages of Se and available phosphorus content while improving organic matter levels and increasing nitrogen-phosphorus nutrients.Concurrently,addressing soil acidification and optimizing soil texture will effectively regulate Se content and its bioavailability,thereby establishing a fundamental basis for advancing Se-enriched and sustainable agriculture.关键词
阳江市/土壤硒/土壤肥力/"硒—肥"相关关系/土壤综合质量评价Key words
Yangjiang City/soil selenium/soil fertility/'Se-fertility'correlation/integrated soil quality evaluation分类
农业科技引用本文复制引用
龚颖婷,姚建武,姜先芽,李盟军,杨健源,卢海澜,申健,卢希旭,宁建凤,吕新民,王荣辉,谢月兰..阳江市农用地土壤肥力与硒含量特征分析及综合质量评价[J].中国农学通报,2025,41(28):68-77,10.基金项目
国家自然青年科学基金项目"长期不同施肥措施下赤红壤水稻土稳定性有机质的演变特征"(42307455) （42307455）
广东省自然科学基金面上项目"长期轮作施肥体系中赤红壤稳定性有机质的演变特征及动力学机制"(2024A1515010270) （2024A1515010270）
广东省农业科学院科技人才引进专项资金项目"优秀博士第三层次"(R2022YJ-YB3008) （R2022YJ-YB3008）
2023年度广东省农业科学院农业资源与环境研究所科技条件平台创新项目"基础及应用基础研究项目"(ZHS2023-03) （ZHS2023-03）
广东省现代农业产业技术体系创新团队建设项目"以农业领域为单元的广东省现代农业产业共性关键技术研发创新团队建设项目(绿色循环农业(含绿肥专题)共性关键技术)"(2024CXTD17) （绿色循环农业(含绿肥专题）
2024年度科技创新战略专项资金(农业科研主力军建设)"广东省农业科学院农业资源与环境研究所2024年驻点工作项目"(2024驻点10) （农业科研主力军建设）
2024年度科技创新战略专项资金(农业科研主力军建设)"广东省农业科学院阳江分院2024年科技支撑与推广服务项目"(2024支撑06). （农业科研主力军建设）
