Research results showed that the surface shape factor was not a constant value, but a variable value with the change of irrigation time, water advance distance and other factors.
研究表明同一次畦灌过程中地表储水形状系数并非恒定值，而是随灌水时间和水流推进距离等因素变化的。
2
The explicit volume balance model was modified and combined with the motion equation of the zero inertia to predict water advance in border irrigation.