灌区灌溉
 灌区灌溉
灌区灌溉灌区灌溉
1
        
      2
        
      3
        
      4
        
      5
        
      6
        7
        
      8
        9
        
      10
        11
        Evaluation of Irrigation Water Supply System Efficiency of Huinong Canal Irrigation District in Ningxia
12
        A Model of Optimizing Irrigation Benefit Calculation for Irrigation District of Diverting Water from the Yellow River
13
        
      14
        
      15
        
      16
        
      17
        
      18
        
      19
        20
        
      21
        Correlation Analysis on Irrigation Water Requirement and Precipitation Amount in Baojixia Irrigation Area
22
        
      23
        24
        25
        26
        29
        
      30
        