Regime of subsurface water resources in shallow groundwater agricultural fields

摘要

In shallow groundwater agricultural fields, water exchanges between groundwater and soil water happen frequently and intensively. This paper analyzes the regime of subsurface water during the growing period of winter wheat from October 1998 to June 1999 in Yucheng area. During an 8 month period of winter wheat growth, 456.66 mm of evapotranspiration and 75.61mm of groundwater evaporation were measured with a new model lysimeter.