| The simulation of water and salt transportation by HYDRUS model in Lubotan of Shaanxi, China |
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| DOI：10.7606/j.issn.1000-7601.2017.01.21 |
| Key Words: saline-alkali land water and salt transportation numerical simulation HYDRUS–1D model |
| Author Name | Affiliation | | PAN Yan-xin | School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China
College of Water Conservancy and Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China | | LUO Wan | School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China | | JIA Zhong-hua | School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China | | JING Si-yuan | College of Water Conservancy and Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China | | LI Shan | State Key Laboratory of Eco-Hydraulic Engineering in Shaanxi, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | WU Di | State Key Laboratory of Eco-Hydraulic Engineering in Shaanxi, Xi'an University of Technology, Xi'an, Shaanxi 710048, China |
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| Abstract: |
| To determine the movement of salt and water in the saline-alkali flatland of Lubotan, Shaanxi province, based on the saturated-unsaturated soil water and solute transport theory, field monitoring data of local water and salt for many years was applied to simulate the rules of local soil water and salt movement, using the HYDRUS 1D numerical model.The soil water and salt changes were analyzed, and the reasonable field irrigation quota was proposed. The results showed that during the whole reproductive period, soil water content had a similar variation trend under different irrigation quotas. Considering water saving and salt control, farmland irrigation quota of 500 m3·hm-2 is reasonable to control salt accumulation in soil. The simulated results of soil water and salt migration using HYDRUS model are basically consistent with the observed values in field experiment, and the results can be referred for farmland management of water and salt in semblable salinity regions. |
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