对洛惠渠灌区地下井水和补给源水的氢和氧同位素值进行监测,分析灌区地下水补给情况及其对盐分运动的影响。结果显示灌区地下水从三级阶地流向二级阶地和一级阶地,洛河、黄河水也补给一级阶地东南部分,该区域由于开采低盐的地下井水灌溉形成降落漏斗。盐分资料显示地下水盐分和地表土壤盐量呈正相关关系,三级阶地地下水盐分大部分来自地质沉积物中可溶盐溶解,而一级阶地除地质沉积物中可溶盐溶解外,还有三级阶地的流入盐分和河水盐分。 The hydrogen and oxygen isotope values ​​of underground well water and recharge water in Luigqu Canal Irrigation District were monitored to analyze the recharge of groundwater and its effect on salt movement in the irrigation area. The results showed that the groundwater in the irrigation area flowed from the third terrace to the second terrace and the first terrace. The Luohe and Yellow River also supplied the southeast part of the first terrace, which formed the descending funnel due to the underground salt water mining with low salt. The salinity data show that there is a positive correlation between the salinity of groundwater and the salinity of surface soil. Most of the groundwater salinity in the terraces is from the soluble salts in geological sediments, Terrestrial inflow of salt and river salt.