TY - Journal of Yangtze River Scientific Research Institute A1 - CAO Yong-qiang, YANG Xue-ting, ZHOU Shu-han T1 - Spatial and Temporal Evolution and Influencing Factors of Water Footprint of Summer Maize in Hebei Province Y1 - 2023-02-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 67 EP - 74 VL - 40 IS - 2 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20210993 ER -