Abstract:
Chinese cabbage stubble soil,corn stubble soil, sweet potato stubble soil and sesame stubble soil showed a great influence on the quality of tobacco in its planting. Tobacco were planted in corn stubble soil, sweet potato stubble soil, sesame stubble soil and Chinese cabbage stubble soil separately.The differences of plant height, stem girth, leaf number, leaf area, matter content and quality of tobacco were determined. It was found that tobacco planted in sweet potato soil and sesame soil had better growth, higher plant, stronger stem and larger leaf than that planted in corn soil and Chinese cabbage soil. It was also also found that the tobaccos in sweet potato soil and sesame soil had more content of potassium and nicotine, but less content of chlorine ion. Considering the quality and properties, sweet potato soil and sesame soil increased the content of soluble sugar, reducing sugar and nicotine, and decreased the chlorinity. From the indices of chmuck’s value, potassium/ chlorine, nitrogen/nicotine, yield, output value, we could conclude that sweet potato stubble soil and sesame stubble soil were more suitable soil for tobacco planting, while the corn soil was more bad