The movement and transformation of phosphate fertilizer and the effects by different nitrogen fertilizers werestudied using the soil columnexperiment.The results showed that after 60 daysincubation，soil pH in the distance of 0～ 2mm close to fertilizer placement in the treatment of monocalciumphosphate(MCP)applied alone decreased from 8.29to 7.82，and water -soluble phosphorus(W -P)，Ca 2 -P，Ca 8 -P in soil column were 7.4，18.6，9.0 mg，accounting for13.0%，32.7%，15.8% of soil inorganic phosphorus increment，respectively.Compared with MCP，co -applicationwithurea(MCP+U)or ammonium sulfate(MCP+AS)reduced soil pH in the distance of 0～ 2 mm close to fertilizerplacement，and increased the movement distance of W -P and the distribution of Ca2 -P，Ca8 -P.The W -P，Ca2 -P decreasedby63.5%(2.7mg)，65.6%(6.4mg)，while Ca 8 -P increased by176.7%(24.9mg)in MCP+U soilcolumn.However， W-P，Ca2 -P increased by100%(14.8mg)，32.3%(24.6mg)，while Ca 8 -P decreased by42.2%(5.2mg)in MCP+ASsoil column.Compared with MCP，MCP+AS improved rapid availability of phosphate fertilizer，and it is more favorablefor the timely supply of phosphorus when the crop nutrient isdeficient，while，MCP+U reduced the rapid availability ofphosphatefertilizer，and it is more beneficial for the medium and long term crop utilization of phosphorus fertilizer.