During 1998～2001,the field experiments of application of silicate fertilizer to maize were conducted.The results showed:The application of silicate fertilizer promoted the growth of maize,strengthened the photosynthesis,increased the utilization rate of light energy and soil moisture,therefore the application of silicate fertilizer attained the goal of water saving,anti-arid and yield increase.In generally dry year,the application amount of silicate fertilizer of 500～750 kg/hm² were better,but in specially dry year,the application amount of silicate fertilizer of 250 kg/hm² was appropriate.