Authors: LI Zhi-xin ^{1, 2}, XU Di ^{1, 2}, LI Yi-nong ^{1, 2}, ZHANG Shao-hui ^{1, 2}
1. China Institute of Water Resources and Hydropower Research, China
2. National Center Efficient Irrigation Engineering and Technology Research, Beijing 100048, China

Abstract: The coupled surface and subsurface flow and solute transport model established by the authors was calibrated with the border strip fertigation experiment data during flowering period of winter wheat. The coupled model was validated by field experiment data obtained in reviving period of winter wheat including surface flow average advance time, soil moisture, concentration of soil  and degree of distribution uniformity of soil moisture and concentration of soil . The results indicate that the relative error and average relative error between simulation and experiment results are within control deviation. The established coupled surface and subsurface flow and solute transport model can be used to simulate and predict the surface and subsurface flow and solute transport process as well as their distribution under different fertigation modes. It provides an effective simulation tool for design, management and evaluation of border strip fertigation system.

Key words: border strip fertigation, soil water, solute transport, integrated simulation, calibration, validation

Published in: Journal of Hydraulic Engineering, Vol. 42, No. 2, 2011

Article ID: 0559-9350 (2011) 02-0143-09