| 引用本文: | 刘洋,李金山,孙秀路,等.基于winSRFR模拟的畦灌入渗参数和灌水质量变化规律研究[J].灌溉排水学报,0,():-. |
| LIU Yang,LI Jinshan,SUN Xiulu,et al.基于winSRFR模拟的畦灌入渗参数和灌水质量变化规律研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】为探究畦灌入渗参数及灌水质量变化规律，以及同灌水时间的关系。【方法】基于7次灌水实测资料（夏玉米-冬小麦轮作），采用winSRFR模型模拟灌水过程，计算入渗参数和灌水均匀度。【结果】结果1：水流推进与消退均方根误差介于0.05~0.41hr和0.06~0.71hr，占推进和消退时间1.23%~7.16%和1.21%~23.37%；结果2：冬小麦水流推进速率明显慢于夏玉米，平均多用时123.99%，冬小麦时期的土壤入渗系数较夏玉米时期平均增大1.05倍，土壤入渗指数较夏玉米时期平均小34.61%，糙率较夏玉米平均增大39.31%；结果3：通过拟合，入渗系数与灌水时间呈线性关系（R2=0.90），可用于入渗系数估算，但是灌水质量指标（DU和AE）与灌水时间线性关系不明显（R2=0.004和R2=0.27）。【结论】：winSRFR模拟效果良好，随灌水次数增加，入渗系数和入渗指数均减小，地表入渗能力降低，有利于灌水质量提升，入渗系数与灌水时间呈线性关系，但是灌水质量指标与灌水时间线性关系不明显。 |
| 关键词: winSRFR;入渗系数;灌水质量;灌水历时 |
| DOI： |
| 分类号:S275.3 |
| 基金项目:国家重点研发计划课题“灌区智慧用水决策技术与平台”（2017YFC0403204），中央级公益性科研院所基本科研业务费专项（工作编号Y2020PT15），中国农业科学院科技创新工程“节水高效灌溉技术与装备”项目 |
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| Study on infiltration parameters of border irrigation and change rule of irrigation quality based on winSRFR simulation |
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LIU Yang, LI Jinshan, SUN Xiulu, SUN Hao
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Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Key Laboratory of Water-saving Agriculture of Henan Province,Key Laboratory of Water-saving Irrigation Engineering of Ministry of Agriculture and Rural Affairs
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| Abstract: |
| 【Objective】To explore the infiltration parameters of border irrigation and the variation law of irrigation water quality, and the relationship between those and irrigation time. 【Method】 Based on seven irrigation data (summer maize-winter wheat rotation), the winSRFR model was used to simulate the irrigation process, the infiltration parameters and irrigation uniformity were calculated. 【Result】Result 1: The root mean square error of water flow advance and recession ranged from 0.05 to 0.41 hr and 0.06 to 0.71 hr, accounting for 1.23%~7.16% and 1.21%~23.37% of the time of advance and recession; Result 2: The water flow advance rate of winter wheat was significantly slower than that of summer maize, that takes 123.99% more time, and the soil infiltration coefficient in winter wheat period was 1.05 times higher than that in summer maize period, the soil infiltration index was 34.61% lower than that in summer maize period, and the roughness was 39.31% higher than that in summer maize period.. Results 3: Through fitting, the infiltration coefficient was linear with irrigation time (R2 = 0.90), which could be used to estimate infiltration coefficient, but the linear relationship between irrigation quality index (DU and AE) and irrigation time was not obvious (R2 = 0.004 and R2 = 0.27). 【Conclusion】 winSRFR simulation results are good. With the increase of irrigation times, infiltration coefficient and infiltration index decrease, surface infiltration capacity decreases, which is conducive to the improvement of irrigation quality. Infiltration coefficient has a linear relationship with irrigation time, but the linear relationship between irrigation quality index and irrigation time is not obvious. |
| Key words: winSRFR; infiltration coefficient; irrigation quality; irrigation time |
