title: Estimation of infiltration parameters and the irrigation coefficients with the surface irrigation advance distance.
abstract: A theory based on Manning roughness equation, Philip equation and water balance equation was developed which only employed the advance distance in the calculation of the infiltration parameters and irrigation coefficients in both the border irrigation and the surge irrigation. The improved procedure was validated with both the border irrigation and surge irrigation experiments. The main results are shown as follows. Infiltration parameters of the Philip equation could be calculated accurately only using water advance distance in the irrigation process comparing to the experimental data. With the calculated parameters and the water balance equation, the irrigation coefficients were also estimated. The water advance velocity should be measured at about 0.5 m to 1.0 m far from the water advance in the experimental corn fields.
authors: State Key Laboratory Base of Eco-Hydraulic Engineering, Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, Shaanxi, China.
authors: Zhou
authors: Z
authors: Beibei
authors: State Key Laboratory Base of Eco-Hydraulic Engineering, Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, Shaanxi, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Northwest A & F University, Yangling, Shaanxi, China.
authors: Wang
authors: W
authors: Quanjiu
authors: State Key Laboratory Base of Eco-Hydraulic Engineering, Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an, Shaanxi, China.
authors: Tan
authors: T
authors: Shuai
mesh_terms: D057914:Agricultural Irrigation; D006801:Humans; D008962:Models, Theoretical; D012987:Soil; D014872:Water Movements; D062066:Water Resources
chemical_list: D012987:Soil