Abstract: Water and nutrient are the two key inputs in agriculture,but their use efficiency is low and their injudicious use leads to environmental degradation.Fertigation has some special advantages in irrigation-agriculture since it provides the most effective way of supplying nutrients to the plant roots.The main objective of the study was to evaluate the effects of two different N application methods(Drip N fertigation and traditional base application N)with different nitrogen fertilizers(urea,ammonium nitrate,calcium nitrate,and ammonium sulphate).The results obtained were as follows: compared with traditional way,drip N fertigation could significantly increase the nitrogen use efficiency 8.75%21.50% for different fertilizer.Nitrogen use efficiency between different nitrogen fertilizers also showed a significant difference,among which calcium nitrate had the lowest N use efficiency