Effects of Varieties and Balanced Fertilization Rates on Chemical Components of Cured Tobacco Leaves

Effects of various varieties and balanced fertilization rates on chemical components of cured tobacco leaves were studied.The results showed that total nitrogen, total sugar, reducing sugar, sugar/alkaloid ratio, and Schmuck's value of tobacco leaves were significantly affected by fertilization rates. With increase of fertilization rates, total nitrogen was increased while total sugar, reducing sugar, sugar/alkaloid ratio, and Schmuck's value were decreased; The chemical components and ratios differed significantly among varieties, except for nicotine. No significant interaction was found between these two factors on chemical components.