Screening and Application of Grading Appearance Characteristics Indicators of Fresh Cigar Tobacco Leaves in Yunnan

• ZHANG Guanghai, 
• WU Yuping, 
• ZHANG Jiwu, 
• YAO Heng, 
• ZHAO Gaokun, 
• LI Wei, 
• LI Yongping, 
• KONG Guanghui