Effect Of Type, Level And Methods Of K Fertilizer Application On Yield And Quality Of Flue-cured Tobacco

An experiment was carried to study the effect of application level and methods of 3 potash fertilizer,including Potassium sulfate,Potassium nitrate and Potassium carbonate,on yield and quality of flue-cured tobacco,The results indicated that:1.In case of each plant application 6g N and N:P:K=1:1:3,Potassium sulfate and Potassium nitrate was applied to tobacco.Their mixture application could improve the yield and quality of flue-cured tobacco.2.In case of each plant application 6g N and N:P=1:1,potassium oxide applied level from 6g/plant increased to 21 g/plant,the tobacco leaves output yield and value had an increasing trend,the K content was increased.The increasing of applied K raised the proportion of superior leaf and average price.High quality and suitable yield of tobacco leaves was produced and the cost was reduced at Potassium oxide applied level 18g/plant.3.In case of each plant application 6g N and N:P:K=1:1:3,K application in several times, the tobacco leaves output yield and value increased,the K content was increased,the proportion of superior leaf and average price was improved and the smoking total score was raised.