Abstract: The varieties and best dosage of N fertilizer and appropriate ratio of N, P and K were studied on leek in this paper. The results showed that the varieties of N fertilizer fitting to apply to leek were (NH4)2SO4 and Urea, but the effects of NH4HCO3, NH4NO3 and NH4Cl were weak on yields increasing. On the calcareous soil in middle fertility, the appropriate dosages of N, P and K fertilizers applying to leek planted in the field are 450-530kg N/hm2, 378kg P2O5/hm2 and 440kg K2O/hm2, the appropriate ratios of N, P and K fertilizers applying are 1:0.77:0.90.