Application of the SWAP model to simulate water-salt transport under deficit irrigation with saline water
The agro-hydrological Soil-Water-Atmosphere-Plant (SWAP) model was calibrated and validated to simulate water-salt transport based on field experiments in an arid region of China. The simulation results show lower soil water content but higher salt concentration under deficit irrigation. Soil water and salinity below 95 cm at 80％ evapotranspiration (ETC) treatments and 65 cm at 60％ ETC treatments were hardly affected by irrigation. With deficit irrigation, the maximum water uptake and salt accumulated layer moved upward. The SWAP model was also used to predict long-term deficit irrigation with saline water. The salinization process reached equilibrium after utilization of saline water for a few years. In summary, the numerical model proves to be a useful tool for studying water-salt transport under different scenarios and for evaluating irrigation practices for a long period.
SWAP model Soil water content Salt concentration Simulation
Jing Jiang Shaoyuan Feng Zailin Huo Zhicai Zhao Binjia
Center for Agricultural Water Research in China, China Agricultural University, Beijing, 100083, PR Center for Agricultural Water Research in China, China Agricultural University, Beijing, 100083, PR China Water Resources Beifang Investigation Design and Research Co. Ltd, Tianjin, 300222, PR China
国际会议
南昌
英文
902-911
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）