Canonical Correlation Analysis of Tobacco Chemical Compositions and Soil Nutrients in Wenshan

The correlations between the contents of chemical components of flue-cured tobacco and soil nutrients in Wenshan were analyzed with canonical correlation analysis. The results indicated that there were significant or extremely significant positive correlation between the reducing sugar content of tobacco leaves and soil p H value, as well as between soil available potassium content and the ratio of potassium to chlorine; soil effective magnesium content was extremely significantly negative correlated with the reducing sugar content of tobacco leaves. There were some differences among the impacts of soil organic matter, available phosphorus, effective magnesium and water soluble chlorine on the contents of main chemical components of B2 F and C3 F tobacco leaves. The impacts of soil nutrient on the nicotine content and the ratio of sugar to nicotine of B2 F tobacco leaves were greater than those of C3 F. The impact of soil nutrient on the potassium content of C3 F tobacco leaves was greater than that of B2 F.