利用winSRFR模拟畦灌入渗参数和灌水质量变化规律

• Published in: Guanʻgai paishui xuebao Vol. 40; no. 6; pp. 88 - 93
• Main Authors: LIU, Yang, SUN Xiulu, SUN, Hao, LI, Jinshan
• Format: Journal Article
• Language: Chinese; English
• Published: Xinxiang City Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 01.06.2021; 中国农业科学院 农田灌溉研究所/河南省节水农业重点实验室/农业农村部节水灌溉工程重点实验室,河南新乡 453002; 中国农业科学院研究生院,北京 100081%中国农业科学院 农田灌溉研究所/河南省节水农业重点实验室/农业农村部节水灌溉工程重点实验室,河南新乡 453002
• Subjects: Abiotic factors; Border irrigation; Borders; Corn; Curve fitting; Design factors; Design parameters; Infiltration; Infiltration capacity; Infiltration coefficient; Infiltration index; Irrigation; Irrigation design; Irrigation efficiency; Mathematical analysis; Mathematical models; Moisture content; Numerical models; Recession; Soil analysis; Soil infiltration; Soil investigations; Soil surfaces; Soil testing; Soil water; Summer; Surface roughness; Surface water; Triticum aestivum; Water flow; Water infiltration; Wheat; Winter wheat; winSRFR; 入渗系数; 灌水历时; 灌水质量
• ISSN: 1672-3317
• DOI: 10.13522/j.cnki.ggps.2019402

【目的】探究畦灌入渗参数及灌水质量变化规律及其与灌水历时的关系。【方法】基于夏玉米-冬小麦轮作实测数据，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】水流推进与消退均方根误差介于0.05~0.41 h和0.06~0.71 h，占推进和消退时间1.23%~7.16%和1.21%~23.37%；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%；通过拟合，入渗系数与灌水历时呈线性关系（R2=0.903 6），可用于入渗系数估算。【结论】winSRFR模型模拟效果较好，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，有利于提升灌水质量，入渗系数与灌水历时呈线性关系。