Effects of Combined Application of Biochar and Nitrogen Fertilizer on Growth and Chemical Quality of Flue-Cured Tobacco

• Conglian HE, 
• Hao GU, 
• Jintao ZHANG, 
• Yonglei JIANG, 
• Yi CHEN, 
• Xiaowei GUO, 
• Li WANG, 
• Chenggang HE