Effect of Applying Organic Fertilizer with Chemical Fertilizer on Flue-cured Tobacco Leaf Quality and Soil Fertility

In order to improve the physicochemical characters and quality of soil,this experiment studies the effect of applying several organic fertilizers with chemical fertilizer on the flue-cured tobacco leaf quality and soil fertility.The results showed that straw mulch+chemical fertilizer treatment could not only improve tobacco growth and development,but also increase the yield and the ratio of super-grade tobacco leaves.While rapeseed cake+chemical fertilizer treatment impeded tobacco plant growth at the early stage.Although this treatment increased the yield by 12% compared with the CK,the ratio of super-grade leaves was relatively low.The effect of pig manure+chemical fertilizer treatment was between the above mentioned 2 treatments.Applying organic fertilizer with chemical fertilizer could distinctively increase the contents of total sugar,reduced sugar and potassium in leaves,and the ratios between sugar and nicotine,between nitrogen and nicotine.At the same time,it decreased the contents of total nitrogen,nicotine and chloride,thus to adjust and balance the chemical components in tobacco leaf.Applying organic fertilizer with chemical fertilizer could also improve the soil organic matter,total nitrogen,total phosphorus,total potassium and available zinc content effectively and thus improved the soil physical and chemical properties.