Mitigating Effects of Topdressing Potassium Fertilization on Photosynthesis, Leaf Structure, and Chemical Components of Waterlogged Flue-cured Tobacco

• LIU Zidan, 
• GU Hao, 
• WANG Jiyuan, 
• CHEN Yi, 
• XU Sai, 
• ZHANG Jie, 
• ZHANG Jintao, 
• HE Chenggang