Images record Gaoping's 40-year journey
    
        
    
      
    
      
    
        
          
          chinadaily.com.cn |
          Updated: 2018-08-16 07:00
          
          
          
          
        


        
      
    
      
    
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   Plastic film mulching technology was popular among farmers in 1986. [Photo by Qin Hongyu/cpanet.org.cn] 
 
     

     

     
  
 
    
   Greenhouse planting technology was widely used in agriculture in 2010. [Photo by Qin Hongyu/cpanet.org.cn] 
 
     

     

          
        
    

        
        
      
    
        
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