应用数理统计方法探讨三峡库区烟叶化学特性在全国烤烟中的地位

以评价三峡库区山地黄壤烤烟烟叶化学性质为目的，在控制试验地采取烟叶样分析化验，对比全国不同烟区烟叶化学成分的资料，运用主成分分析和Ｑ型聚类分析，定量分析了全国不同烟区烟叶化学组分的特点和不同烟区烟叶化学性质的异同，将全国烤烟烟叶分为山东型、河南型、大西南型，从而充分认识了三峡库区烟叶化学性质属“大西南”型，烟叶具有含钾量高的优势。同时，还提出了该区优质烤烟生产的施肥措施。

RESEARCH ON THE SITUATION OF THE CHEMICAL CHARACTERISTICS OF THE FLUE CURED TOBACCO LEAF IN THE THREE GORGE RESCRVIOR REGOIN IN CHINA WITH THE METHOD STATISTICS

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.