The tobacco agronomic traits and N,P,K content of different treatment and tobacco yield,percentages of high quality leaves were studied.The results showed that different levels of N,P,K fertilization took effect on tobacco agronomic traits,the impact was N greater than K and greater than P,considering yield and high quality leaves,N2P2K2 was the best fertilization rate,the percentages of high quality leaves decreased whenever N,P or K lack or shortage.Application of appropriate nitrogen was in favor of N and K assimilate,whereas the K content decreased to the extent of 11% at N3 level.The N and K content also decreased at high or low P level.K and N content were improved to the highest extent of 37% as potassium fertilization increasing.With the more nitrogen applying,the nitrogen agronomy use efficiency of fine grade cured leaf decreasing distinctly,whereas phosphorus and potassium agronomy use efficiency increasing to a certain extent.