To illustrate the effects of water and fertilizer management measures and soybean yield and agronomic traits. Comparative analysis of different nitrogen nutrition level and different nitrogen nutrition level + irrigation treatment under the cultivation mode of narrow row solid seeding. The results showed that: combination of irrigation and nitrogen fertilizer than nitrogen fertilizer on soybean yield increase by 13.2%, trough statistical analysis, N2 and irrigation is the best water treatment measures. In addition, water and nitrogen coordination treatment, the plant height and stem diameter of soybean were significantly increased, to get more biological production and provide more of C and N nutrition as the straw returned to field.