| Trial studies on characteristics of soil water and salt distribution in brackish water drip irrigation |
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| DOI：10.7606/j.issn.1000-7601.2010.06.06 |
| Key Words: brackish water irrigation irrigation water quality irrigation volume desalinizaion coefficient |
| Author Name | Affiliation | | WANG Chunxia | Institute of Water Resources, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | WANG Quanjiu | Institute of Water Resources, Xi'an University of Technology, Xi'an, Shaanxi 710048, China
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100，China | | LIU Jianjun | Institute of Water Resources, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | ZHANG Ming | Xinjiang Instiute of Water Conservation and Hydraulic Power，Wurumqi, Xinjiang 830049，China | | ZHUANG Liang | Xinjiang Instiute of Water Conservation and Hydraulic Power，Wurumqi, Xinjiang 830049，China | | PAN Hongbin | Hydraulic Management Department of Bayinguoleng Mongolia Prefecure in Xinjiang, Kuerle, Xinjiang 841000, China |
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| Abstract: |
| To find out the effect of brackish water quality and imigation volume on the distribution of water and salt
in soil and make full use of brackish water in irrigation, an experiment of drip irrigation was conducted with different
brackish water quality (0.74, 2.65, 3.5 g/L and4.41 g/L) and different irrigation volume (6, 8 L and 10 L), and an
analysis was made of the characteristics of soil water and salt distribution in wetness body of freshwater and 3.5 g/L
brackish water under different irrigation volume. The results indicate that brackish water may increase horizontal soil wa-ter content, but its desalinizaion effect is lower than that of freshwater; The average salinity in 0~40 cm layer is more than that of the initial amount, while there is no salt cumulation in 10~40 cm layer, which can fit the cotton growth; The imigation water ration is 23 m3/mu in the test, so it is feasible to adopt a ration of≥23 m3/mu 3.5 g/L brackish water in the condition of local soil quality; The vertical desalinizaion coefficient increases with irrigation volume augment and their relation assumes linearity, so the irrigation volume may be ascertained through desalinizaion cefficient by using this formula. |
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