Comprehensive evaluation of the production performance and nutritional value of 14 silage maize varieties in rainfed areas of Ningxia

• CAO Lijuan, 
• ZHANG Shunxiang, 
• YAO Ya’ni, 
• WANG Bin, 
• LI Manyou, 
• SHEN Xiaotian, 
• XIE Yingzhong, 
• LAN Jian