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| DOI： |
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| Numerical Simulation and Analysis of the Transport of Soil Water and Salt in Brackish Water Irrigation Area of Huimin |
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ZHAO Zhiqiang, XU Zhenghe, YAN Liangguo, PANG Guibin, WANG Tong, ZHANG Lizhi
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College of Resources and Environment, University of Ji’nan, Ji’nan 250022, China
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| Abstract: |
| The project area of Sang Luoshu in Huimin was taken as the object in order to make use of water resources reasonably and to ensure the groundwater salt environment. The numerical model of soil water and salt movement were constructed using the HYDRUS software, and the numerical simulation and analysis of soil water and salt movement in this area were carried out under the condition of brackish water irrigation. The results indicated that, the HYDRUS was an appropriate model to simulate soil water and salt movement, salification zone positions were respectively at 40, 40, 20 cm from the soil surface layer after the alternate irrigation by fresh water, brackish water and fresh water; The soil salt content in May was the lowest, and it was higher in April than those in March and May. The lowest soil moisture existed in March, and it was higher in May compared with those in April and in March; Thirdly, in March, April, May, the maximum change of groundwater level ranged from 0.2 m to 2.6 m in the study region, and the study area soil belongs to mild salinization. |
| Key words: Huimin County; brackish water irrigation; numerical simulation; distribution characteristics; migration regularity |
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