| Cite this article: | 汪顺生,王爱滨,傅渝亮,等.宽垄沟灌土壤水分累积入渗特性HYDRUS-2D模拟与实验研究[J].灌溉排水学报,0,():-. |
| wangshunsheng,wangaibin,fuyuliang,et al.宽垄沟灌土壤水分累积入渗特性HYDRUS-2D模拟与实验研究[J].灌溉排水学报,0,():-. |
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| Study on Experiment and Simulation of Cumulative Infiltration under the Wide Ridge Furrow Using HYDRUS |
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wangshunsheng, wangaibin, fuyuliang, chenchunlai, yanyongfang
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North China University of Water Resources and Electric Power
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| Abstract: |
| 【Objective】 In order to explore the influence of pressure head and initial soil moisture content on cumulative infiltration. 【Methods】 In this paper, based on the HYDRUS-2D simulation of the wide ridge irrigation process of homogeneous soil under 5 different initial moisture content and pressure water head conditions, the effects of both on the accumulated infiltration of soil were analyzed. On the basis of the capacitive charging model, an empirical model of the infiltration volume and the infiltration time of the irrigation with wide ridges and furrows was established. 【Results】 With the increase of pressure head, the accumulated infiltration amount of soil under wide ridge and furrow irrigation increased, and decreased with the increase of moisture content. The simulation value of the empirical model is close to the measured value of the verification test, and the simulation effect of the model is better. 【Conclusion】 Increasing the pressure head or decreasing the initial moisture content of the soil is beneficial to the increase of the accumulated infiltration in the irrigation of wide ridges and furrows. The established model of accumulated infiltration of wide ridge irrigation has high accuracy. |
| Key words: Wide furrow irrigation;Cumulative infiltration;Model;HYDRUS-2D |
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