| This article analyses the status of agricultural water resource and water saving potential in Luancheng county, Hebei province, and studies the optimization of agricultural water resource in order to achieve the sustainable use of underground water in this region. The results indicates that, after optimizing the system and structure of crops, the total amount of water requirement can be reduced by 45.48 millions m3, the benefits of economy and environment can be improved, and the balance of exploitation and supply of underground water resource can be achieved. |