The effect of certain nitrofication inhibitors, such as 2-chloro-6(trichloromethyl) pyridine and 1-amino-2-thiourea, on the absorption rate of urea, ammonium carbonate, ammonium sulphate and ammonium nitrate by the rice variety Bai-Jin was studied. The rice plant tested was grown in the field plots on a saline light color meadow soil or in bottomless pots filled with the same soil. It was found that the utilization rate of the fertilizer nitrogen by the rice plants and the yield of rice grains were increased to different extent due to the application of nitrofication inhibitors.