Ammonia volatilization loss of nitrogenous fertilizers in Grey Desert soil Field of Xinjiang were monitored in situ by the method of phosphoric acid and glycerol-sponge venting chamber. Ammonia volatilization loss Characteristics were measured under different fertilization-cropping systems in the oasis of Xingjiang.The fertilizer treatments were CK (without fertilizer), N alone, N+P, N+P+K, N+P+K+M1(M1- manure at increased application rate), N+P+K+M2 (manure at normal application rate), and N+P+K+S (S-plant residue returned to field). The obtained results are summarized as follows: (1) In the long-term spring wheat cropping system, with a typical fertilization mode of “field ploughed deeply after basal fertilizer application and irrigation conducted immediately after topdressing application”, ammonia volatilization loss was 0.27-2.48kg hm-2 with the N fertilizer application rates of 84.97-241.5kg?hm-2,and the loss represented 0.39%-1.23% of the total applied fertilizer N, The ammonia volatilization loss from basal fertilizers was higher than that from topdressing. (2)At the same N rate, the accumulated N loss by ammonia volatilization was 1.02, 0.94, 1.99, and 2.44 kg?hm-2, respectively for N, N+P, N+K, and N+P+K treatment and significantly correlated with available K in the soils (r=0.951, P<0.05, n=4). (3) the accumulated volatilization N loss was 1.40, 1.04, and 1.58 kg?hm-2, respectively for the N+P+K+M1, N+P+K+M2, and N+P+K+S treatment and significantly correlated with N fertilizer rate (r=0.581, P<0.05, n=18). These results indicate that ammonia volatilization loss from N fertilizers was not the major pathway of N losses under the current dominant cropping system (spring wheat). The differences in volatilization N loss in the green belt of Xinjiang are mainly caused by various combinations of organic and inorganic fertilizers, which change soil properties in the long run.