ABSTRACT
There is short of water resources in the northern part of China, carry out conjunctive management of surface and groundwater is the basic approach for rational development and utilization of water resources and comprehensive control of drought, waterlogging, salinity and saline water. For conjunctive management of surface and groundwater, the key lies in regulating the groundwater depth dynamics at a proper level, take the interstratified space of shallow groundwater as the underground reservoir for “ four water “ (1) ( rain water, soil water, groundwater and surface water ) regulating, to transform the natural rainfall into available water resources in maximum extent, to make the surface runoff fully retained and utilized, to strengthen the salt leaching and water quality freshening by summer rain, then achieved comprehensive control of multiple objectives for irrigation districts. In the well irrigation districts where without fixed canal irrigation water source, retain the excessive rain water in rainy season and diverting river flow after rainy season for recharging groundwater as the water source supplementary. In the river flow irrigation districts where with the condition to exploit groundwater, should carry out both using wells and canals, optimized regulation of surface and groundwater, to achieve the maximum benefits of water resources.
