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中国农学通报 ›› 2020, Vol. 36 ›› Issue (24): 47-53.doi: 10.11924/j.issn.1000-6850.casb20190700489

所属专题: 耕地保护

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

龟裂碱土地下水年际动态变化特征研究

杨军1(), 孙兆军2   

  1. 1北方民族大学土木工程学院,银川 750021
    2宁夏大学环境工程研究院,银川 750021
  • 收稿日期:2019-07-29 修回日期:2019-09-06 出版日期:2020-08-25 发布日期:2020-08-20
  • 作者简介:杨军,男,1979年生,宁夏隆德人,工程师,博士,主要从事盐碱地水盐调控和节水灌溉理论与新技术研究。通信地址:750021 宁夏银川市西夏区文昌路 北方民族大学,Tel:0951-2066709,E-mail:yangjun790608@126.com
  • 基金资助:
    宁夏自然基金“砾石暗沟排盐对龟裂碱土改良水盐效应及油葵生长相应机理研究”(NZ17092);宁夏高等学校科研项目“龟裂碱土改良利用及水盐调控技术示范”(NGY2017151);北方民族大学人才引进项目“洗盐改良龟裂碱土效果及土壤盐分离子迁移规律研究”(2017)

Interannual Dynamic Changes of Groundwater in Takyric Solonetz Land: Characteristics Study

Yang Jun1(), Sun Zhaojun2   

  1. 1School of Civil Engineering, North Minzu University, Yinchuan 750021
    2Institute of Environmental Engineering, Ningxia University, Yinchuan 750021
  • Received:2019-07-29 Revised:2019-09-06 Online:2020-08-25 Published:2020-08-20

摘要:

旨在为龟裂碱土改良利用水盐调控提供理论依据,本研究对龟裂碱土用绳测法测地下水埋深、电导率仪测定矿化度、多参数测试仪测定pH值和滴定法测定盐分离子,对比分析龟裂碱土地下水埋深、矿化度、pH值和盐分离子年际变化规律。结果表明:地下水埋深和矿化度横向变化较大,变异系数分别为22.2%和38.9%,盐分离子Na+、Cl-和HCO3-横向变异较大,Ca2+和K+横向变异较小;地下水盐分离子主要以Na+、Cl、SO42-和 HCO3-为主;地下水埋深逐年变浅,pH值、矿化度逐年变小。本研究结果为龟裂碱土改良利用水盐调控提供依据,以及对干旱地区的环境保护和农业灌溉具有重要的科学价值。

关键词: 龟裂碱土, 水盐调控, 地下水, 年际, 埋深, 矿化度

Abstract:

In order to provide a theoretical basis for salt-water management of the takyric solonetz farmlands, in this study, the depth of groundwater was measured by rope method, mineralization was detected by conductivity meter, pH was determined by multi-parameter meter and salt ions were measured by titration method. The variation of the depth, mineralization and salt ion of groundwater of takyric solonetz farmlands were compared and analyzed. The results showed that the horizontal changes of the depth of groundwater and mineralization were great, and the variation coefficients were 22.2% and 38.9%, respectively. The horizontal variations of salt ion Na+, Cl-, and HCO3- were relatively great, while Ca2+ and K+ had less variation. Groundwater salt ions were mainly Na+, Cl, SO42- and HCO3-. Groundwater depth became shallow year by year, pH and mineralization became smaller year by year. These results provide a technical support for salt-water management of the takyric solonetz farmlands, and have important scientific value for environmental protection and agricultural irrigation in arid areas.

Key words: taryric solonetz land, salt-water control, groundwater, interannual, depth, mineralization

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