Fig. 3. Simulated water flow chart of the RICEWQ and VADOFT models. 1, paddy water input including irrigation and precipitation; 2, paddy runoff; 3, evapotranspiration, 4, the bottom of the active paddy sediment layer; 5, seepage and infiltration; 6, water inflow into vadose zone of soil profile; and 7, water outflow from Soil Layer i.