Effect of different planting densities on bio mass yield and quality for various varieties of silage maize

• WANG Xiaojuan, 
• HE Haijun, 
• KOU Sirong, 
• ZHOU Yuqian, 
• LIU Zhongxiang, 
• YANG Yanzhong, 
• LIAN Xiaorong, 
• ZHOU Wenqi