Page 41 - 2021年第52卷第10期
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Distributed water transformation model based on multi-process coupling
                                                  in rice irrigation area


                                             WANG Pu,LU Zhao,HUO Zailin
                          (College of Water Resources & Civil Engineering,China Agricultural University,Beijing  100083,China)


                   Abstract: Due to the frequent process of irrigation-drainage in rice irrigation areas, quantitative character⁃
                   ization of water conversion process in the irrigated area is of significant to water resources management in
                   irrigation areas. This study fully considers the temporal and spatial complexity of the supply-consump⁃
                   tion-discharge process in the rice irrigation area and the impact of water transformation on the process of
                   groundwater replenishment and drainage. The model was calibrated and verified using data such as rice
                   growth indicators, evapotranspiration, groundwater level, and drainage ditch discharge in Heping Irrigation
                   District of Heilongjiang Province. The results show that the model has high accuracy. Compared with the tra⁃
                   ditional simulation method of water conversion, this model realizes the distributed simulation of water con⁃
                   version and crop growth processes through the coupling of the physical process of water conversion in irriga⁃
                   tion district. At the same time, the model has fewer parameters and avoids the complicated calculation of
                   the water conversion process in the irrigation area. This model provides an important method for the simula⁃
                   tion of multi-stage water conversion process and water efficiency evaluation in rice irrigation areas.
                   Keywords: rice irrigation area; water transformation model; irrigation and drainage process; farmland wa⁃
                   ter transformation;groundwater movement

                                                                                   (责任编辑:韩         昆)






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