Regulating effect of nitrogen application on yield formation of forage maize in the Jianghuai Area

• SHI Wen-Juan, 
• DONG Zhao-Rong, 
• WANG Ben-Zhong, 
• DAI Ming-Huo, 
• LIAN Ya-Nan, 
• FANG Yu, 
• YAO Zuo-Wen