Study on the Exploitation Scheme of Groundwater under Well-Canal Conjunctive Irrigation in Seasonally Freezing-Thawing Agricultural Areas

The suitable groundwater exploitation scheme in freezing-thawing agricultural areas under the well-canal conjunctive irrigation conditions is confronted with two major challenges, which are computationally expensive local grid refinements along wells, and model suitability problem period. In this study, an empirical method for level prediction period was developed integrated refinement MODFLOW-LGR process prediction. then applied to estimate scheme, including size of well-irrigated area single well. results showed that should be smaller than 15 × 106 m2, recommended well as 104 m2 19 m2. layout parameters were further used plan Yongji district located northern China. This study provides important pilot example use surface water arid a seasonal