Abstract:

The relationship between tobacco quality and the plant environment is one of the key question in tobacco standardization production. In order to clarify the relationship on the major chemical composition in flue-cured tobacco leaf and soil nutrient, the major chemical composition of 62 tobacco samples and nutrient of the soil samples were analyzed by multiple regression analysis. The results indicated that the contents of total sugar, reducing sugar and potassium in G80 are higher than the other tobacco varieties significantly; the contents of nicotine and total nitrogen are no significant difference among tobacco varieties. The contents of flue-cured tobacco chemical composition are moderate in tobacco-growing area of Hunan. The contents of sugar are highest in Hengyang, lowest in Zhangjiajie. The content of nicotine is highest in Huaihua, lowest in Shaoyang. The total nitrogen is highest in Yongzhou, lowest in Shaoyang. The content of potassium is highest in Changsha, lowest in Zhangjiajie. The content of soil organic matter is richer. The contents of total nitrogen and alkalined-nitrogen are in the medium level. The content of total phosphorus is lower and the phosphorus available is in the medium. The contents of total potassium and quick-acting potassium are in the lower level. The effects of total phosphorus and nitrogen content in soil on flue-cured tobacco’s chemical composition are stronger. We could pay attention to establish the quality standard for internal control and industry and commerce change standard vary from the production base, especially, planting standard should consider its environment plenty. We could establish scientific and economical flue-cured tobacco standard system by existing technology quantitatively and economic factors comprehensively.