Relationships Between Soil Nutrients and Contents of Chemical Components in Flue-cured Tobacco

The relationships between soil nutrients in tobacco-growing bases and the contents of chemical components in flue-cured tobacco were analyzed with descriptive statistics analysis,correlation analysis and canonical correlation analysis.The results indicated that: 1) the soil in tobacco-growing bases was rich in nutrients in general,but the nutrients were not evenly distributed.The K content was lower and protein content was higher in flue-cured tobacco;2) the content of organic matter in soil was significantly positively correlated with alkali-hydrolyzable N in soil and the contents of nicotine,total N and protein in flue-cured tobacco,and it was significantly negatively correlated with the contents of total sugar and reducing sugar in flue-cured tobacco.The soil pH value was significantly negatively correlated with the contents of nicotine,total N and protein in flue-cured tobacco and it was significantly positively correlated with the contents of total sugar and reducing sugar in flue-cured tobacco;3) within a certain range,the contents of nicotine,total N,protein and K in fluecured tobacco raised with the increase of the contents of alkali-hydrolyzable N, available P,available K and organic matter in soil,the contents of total sugar and reducing sugar in flue-cured tobacco raised with the increase of the contents of available K and pH value in soil,and the content of chlorine in flue-cured tobacco raised with the increase of the content of water-soluble chlorine in soil.