Effects Of Different Ratios Of Organic Manure To Inorganic Fertilizer On Growth And Quality Of Flue-Cured Tobacco

In order to find out the suitable amount of organic manure in Ji'an area,the ratio of nitrogen fertilizer to fertilizer was 6:4,all organic fertilizers are used as base fertilizers premise,experiments were carried out to research the development,chemical composition and economic character of flue-cured tobacco under different organic fertilizer level in Anfu County of Jiangxi province.Yunyan 87 was taken as study materials.(1)The results showed that the plants which were applied with a certain amount(25%~50%)of organic fertilizer could both ensure the early and later nutrition supply of tobacco plant and grow steadily for a long time.(2)Applying with organic manure could increase the nitrogen,phosphorus and potassium contents of tobacco leaves in the whole growth period.Applied with a certain amount of organic fertilizer was beneficial to yellowing and maturity of tobacco leaves.In the same time applied with low proportion of organic fertilizer could improve the quality of tobacco leaves.Applied with 50% proportion of organic fertilizer performed the best in this experiment.(3)Applying with organic manure could increase internal quality of tobacco leaves.The chemical composition content of tobacco leaves were more suitable and the chemical compositions in tobacco leaves were more balance with the proportion of organic fertilizer less than 50%.(4)Applying organic manure could improve the sensory and reveal the style of tobacco.The T1(25%)treatment performed best in middle tobacco leaves.The T2(50%)treatment performed best in upper tobacco leaves.(5)Applying with organic manure could increase quality,superior and medium proportion and average price of tobacco leaves.But the yield and production value of tobacco leaves decreased when applied with high proportion of organic manure.The economic characters of tobacco leaves performed best applying with 50% proportion of organic fertilizer in this experiment.(6)Applying with organic manure could improve the status of soil,and cultivate the soil fertility.Based on all the results from the tests concerned,it shows that applied 135kg/hm2 nitrogen and a certain amount 25%~50% of organic fertilizer was more benefit to improve quality of tobacco leaves and had a better economic benefits under this experimental condition.