Industry as a buffer, training agents; High phosphorus and potassium fertilizer used in agriculture; Potassium dihydrogen phosphate products are widely applied to various types of crops, grain, fruits, vegetables and other types of crops, almost all the provinces by the local The Academy of Agricultural Sciences, Soil and Fertilizer Station and other expert bodies, typical for potassium dihydrogen phosphate crops for many types of related applications experiments through the various types of crops around the actual application results demonstrate a significant increase production of potassium dihydrogen phosphate, change the amount of optimization quality, lodging resistance, resistance to pests and diseases, premature aging and many other quality control role, and has overcome the late crop root absorption capacity of aging caused by the decline in the role of nutritional deficiencies. High concentrations of phosphorus and potassium dihydrogen phosphate is the second element of the new compound fertilizer, which contains 52% phosphorus pentoxide, potassium oxide containing about 34%. Tobacco to be phosphorus, potassium large, large amount of potassium in particular need. Potassium dihydrogen phosphate is used for flue-cured tobacco in an ideal new fertilizer. In order to explore the use of potassium dihydrogen phosphate in the tobacco on the value and application methods to improve the quality of tobacco. Modified to add food grade use as food.