Total sugar content of flue-cured tobacco from production areas in Hunan province were determined and statistically analyzed in order to understand roundly regional character of total sugar.The results showed that the sequence of total sugar contents:X2F〉C3F〉B2F.There was extremely significant difference in the total sugar content of flue-cured tobacco among stalk positions and among years and not significant difference among breeds.There was significant difference in total sugar content of flue-cured tobacco among administrative areas and e...