| Cite this article: | 刘鹏,杨树青.不同地下水埋深对土壤水与地下水交换的影响[J].灌溉排水学报,0,():-. |
| liupeng,yangshuqing.不同地下水埋深对土壤水与地下水交换的影响[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Effect of different groundwater depths on the exchange of soil water and groundwater |
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liupeng, yangshuqing
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内蒙古农业大学
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| Abstract: |
| 【Objective】To explore the law of water transport in soil aerated zone under different groundwater depth and irrigation amount,improved irrigation water use efficiency. 【Method】The field experiments were carried out in Hetao Irrigated District on the influence of different groundwater depth and irrigation amount on soil moisture content, groundwater level and water transport in aerated zone. 【Result】The results showed that the soil moisture content of 0-60 cm before and after irrigation changed significantly under different irrigation levels . Irrigation mainly supplemented tillage layer, and the excess water infiltration replenished groundwater, and the infiltration amount accounted for about 25% of the irrigation water. The larger irrigation quota, the more soil water replenished groundwater. The ratios of groundwater recharge and irrigation were L1 Processing >L2 Processing >L3 Processing >L4 Processing>L5 Processing >L6 Processing >L7 Processing >L8 Processing > and L9 Processingin turn. 【Conclusion】For Hetao Irrigated District with an average annual groundwater level of about 1.8 m, a single irrigation of 90mm in the growth period and 300 mm in autumn irrigation, the infiltration of irrigation water could be significantly reduced and diving evaporation could be fully utilized to improve the utilization efficiency of water resources, to realize the purpose of saving water and increasing production. |
| Key words: irrigation amount; groundwater depth;exchange;infiltration capacity |
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