To improve the utilization efficiency of agricultural irrigation water resources and alleviate the over-extraction of groundwater in Hebei Province, winter wheat and summer maize are taken as the research subjects. Using the C—D production function, the output elasticity of agricultural irrigation water was calculated, followed by an assessment of the value of irrigation water resources in each city in Hebei Province. Furthermore, the temporal and spatial variability of agricultural irrigation water resource value and its driving mechanisms are analyzed. The results show that the output elasticity of irrigation water for winter wheat and summer maize is higher than 0, indicating the positive role of irrigation water in agricultural production. During the research period, the value of winter wheat irrigation water resources in each city showed a fluctuating upward trend over time, with a spatial pattern of “central region > southern region > northern region”. For summer maize, the temporal trend exhibited a “rapid increase, followed by a slow decline, and then gradual rise”, with a spatial distribution of “southern region > northern region > central region”. The overall value of irrigation water for summer maize exceeds that of winter wheat. Measures such as optimizing the allocation of production factors and promoting water-saving technologies can enhance the efficiency of agricultural water use and further support the sustainable utilization of agricultural water resources in Hebei Province.

为提升河北省农业灌溉水资源利用效率，缓解其地下水超采问题，以冬小麦—夏玉米为研究对象，基于C—D生产函数计算河北省农业灌溉用水产出弹性，进一步求解各地市农业灌溉水资源价值，并探析河北省农业灌溉水资源价值的时空变异特征及驱动力机制。结果表明：研究区冬小麦和夏玉米灌溉用水产出弹性均大于0，表明灌溉水资源对农业生产起积极作用；研究期间，各市冬小麦灌溉水资源价值时间上呈波动上升态势，空间呈“中部>南部>北部”特征；夏玉米灌溉水资源价值时间上呈“先快速上升，后缓慢下降，再逐渐上升”态势，空间特征表现为“南部>北部>中部”，夏玉米灌溉水资源价值整体高于冬小麦。通过优化生产要素配置、推广节水技术等措施可提高河北省农业用水效率，进一步促进河北省农业水资源可持续利用。