关键词: 烤烟, 化学性质, 数理统计

Abstract: The purpose of this thesis is evaluating the chemical properties of the flue cured tobacco leaf in the yellow mountain soil in the Three Gorge Reservoir Region. By analyzing chemical composition of the tobacco leaf in the controlled testing field, comparing with the chemistry properties of the tobacco leaf from different areas of China, using the principal components analysis and the Q cluster analysis to quantitatively analyse the characteristics of the chemical consitituents and the difference of the chemical properties of the tobacco leaf from different areas of China, the tobacco leaf from different areas of China can be classified into the Shandong's, Henan's and southwest's type. And the chemical properties of the tobacco leaf in the Three Gorge Reservoir Region should be classified into the souehwest's type and it has the superiority of high potassium content in the leaf.We also offer an opinion of the applying fertilizer of the good quality Flue-cured Tobacco production in the soil in the area.

Key words: FLUE-CURED TOBACCO, CHEMISTRY PROPERTIES, STATISTICS