中国农学通报2025，Vol.41Issue(23)：45-52,8.
黄河三角洲盐碱地土壤盐分和浅层地下水水质变化规律研究
Research on Variation Patterns of Soil Salinity in Saline-alkali Land and Shallow Groundwater Quality in the Yellow River Delta
摘要
Abstract
To explore the law of water and salt transportation under different improvement modes of saline-alkali land in the Yellow River Delta,this study innovatively adopted a combination of continuous dynamic monitoring(June-November 2024)and multi-factor(soil-groundwater-drain)comprehensive analysis.Taking Kenli District of Dongying City as the research area,the response mechanism of water and soil environment in the process of saline-alkali land improvement was systematically studied through field fixed-point sampling.The results showed as follows.(1)Under the condition of subsurface pipe drainage,the soil total salt content in the rice-improved area decreased by 82.81%-91.73%at the end of the growth period,which was significantly higher than that in the rain-fed area(71.79%-81.54%).(2)Following the conversion to rice cultivation,the soil pH increased,and salt leaching led to a pH increase of 6.55%-13.10%,showing a typical'desalination and alkalization'feature;Notably,except for HCO3-,there was a significant correlation observed between other ion indicators,total salinity and soil pH.(3)The total salt content of groundwater was driven by irrigation-precipitation coupling,showing a trend of increasing first and then decreasing.The buried depth from July to September was generally<1.2 m,and the water quality from August to November(total salt content>2g/L)exceeded the standard of farmland irrigation and should not be directly used for farmland irrigation.The results of this study can provide some theoretical and technical support for the regulation and control of soil salinization in the Yellow River Delta.关键词
土壤盐分/土壤离子/地下水水质/排水沟水质/土壤全盐量Key words
soil salinity/soil ions/groundwater quality/drainage ditch water quality/total salt content分类
农业科技引用本文复制引用
朱玉朵,王薇,黄乾,庞桂斌,韩合忠..黄河三角洲盐碱地土壤盐分和浅层地下水水质变化规律研究[J].中国农学通报,2025,41(23):45-52,8.基金项目
山东省重点研发计划项目"黄河流域多尺度水网构建与生态修复技术研究及应用示范"(2023CXGC010905). （2023CXGC010905）
