Effects of fertilization and harvest period on Pennisetum flaccidum yield and forage quality in the Lhasa River Valley

• XIAO Jianyu, 
• ZHANG Guangyu, 
• WANG Jiangwei, 
• HUANG Shaolin, 
• WANG Zhishu, 
• FU Gang, 
• SHEN Zhenxi, 
• YU Chengqun