Effects of silage fermentation promoter and harvest stage on nutrient quality of whole silage maize

• FAN Kaili, 
• SU Yajun, 
• WU Jianping, 
• LI Yu, 
• DOU Siyuan, 
• ZHANG Rui, 
• LI Zemin, 
• JIA Li, 
• LEI Zhaomin