Fate of urea, ammonium bicarbonate and potassium nitrate applied to a black soil growing spring wheat was investigated by the ¹⁵N tracer technique and microplot in the field. The experiment was conducted in suburbs of Hailun city, Heilongjiang Province. Nitrogen fertilizer at a rate of N 75 kg/hm² was deeply placed in 10 cm soil layer. Results showed that deep placement is an effective measure to decrease nitrogen loss and. increase the efficiency of fertilizers N utilization in spring wheat black soil system. The plant recoveries of potassium nitrate (58.4%) and urea (55.9%) were comparable, and significantly higher than that of ammonium bicarbonate (42.6%). The residual N in soil from applied potassium nitrate (28.7%) was significantly lower than urea (38.2%) and ammonium bicarbonate (38.8%). The total nitrogen losses for the three sources of N fertilizers were in the range of 5.8%-18.6% with the lowest from urea and the highest from ammonium bicarbonate. The priming effect of N fertilizers applied to the black soil was rather low. Results also showed that about 1/3 of the N taken up by wheat was derived from the applied N fertilizers and 2/3 from soil.