Effects of Different Magnesium Fertilizer Levels on Light-response Curves and Yield of Flue-cured Tobacco

• BAI Yuxiang, 
• YANG Huanwen, 
• XU Zhaoli, 
• LI Zhengfeng, 
• WANG Ge, 
• SHI Puyou, 
• ZHANG Jinfeng, 
• WEI Jun, 
• TAN Xiaobing, 
• LYU Shibao