Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil

YIN Qin-rui; ZHANG Xing-chang; WANG Dan-dan

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Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil

- Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil
- Bulletin of Soiland Water Conservation Vol. 30, Issue 3, Pages: 71-74(2011)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院,陕西杨凌,712100
  2. 西北农林科技大学水土保持研究所,陕西杨凌,712100
  3. 中国科学院水利部水土保持研究所,陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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YIN Qin-rui, ZHANG Xing-chang, WANG Dan-dan. Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil[J]. Bulletin of Soiland Water Conservation, 2011, 30(3): 71-74.
DOI：

YIN Qin-rui, ZHANG Xing-chang, WANG Dan-dan. Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil[J]. Bulletin of Soiland Water Conservation, 2011, 30(3): 71-74. DOI：

摘要

为了探究初始含水量对盐碱土饱和导水能力和盐分淋洗的影响，采用室内模拟试验，进行了6个不同初始含水量的定水头饱和导水能力试验。结果表明，盐碱土饱和导水率随初始含水量的增加而减小，二者呈显著的线性负相关;随初始含水量的增加，淋洗液pH值降低，电导率升高;随盐碱土饱和导水率的增大，淋洗液pH值升高，电导率降低，二者均与饱和导水率间呈对数关系。长期淹水状态下，盐碱土饱和导水能力平稳降低，盐分淋洗效果也变差。

Abstract

The effect of initial water content on saturated hydraulic conductivity( KS10) and salt leaching of alkaline soil was researched using column leaching experiments in laboratory.Saturated hydraulic conductivity was measured at six different initial water contents.The results indicated that saturated hydraulic conductivity decreased with an increase in initial water content

showing a significant negative linear correlation. With an increase in initial water contents

the pH value decreased while electrical conductivity(EC)increased.The pH value in leachate increased but the EC decreased as the KS10 increased

both following logarithmic functions.In addition

the saturated hydraulic conductivity of alkaline soil and salt leaching efficiency decreased slowly in the condition of prolonged immersion.

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