[目的]为了探讨不同磷肥用量对玉米产量、效益及养分吸收的影响,确定经济施磷量。[方法]采用田间试验方法,在海城、昌图和彰武地区进行不同磷肥用量试验。[结果]施磷可显著增加玉米产量和经济效益,各施磷处理比不施磷处理增产3.2%～21.5%,增收173～1 724元/hm2;施用磷肥可促进玉米对氮磷钾养分的吸收,但随着施磷量的增加,磷肥的增产效益和利用率降低。[结论]海城、昌图和彰武地区最高产量施磷量分别为89、116和129 kg/hm2,经济施磷量分别为77、98和100 kg/hm2。 [Objective] The purpose of the study was to determine the effect of phosphorus application rate on yield, benefit and nutrients absorption of maize. [Method] The field experiment method was used to test the amount of phosphate fertilizer in Haicheng, Changtu and Zhangwu areas. [Result] Phosphorus application could increase corn yield and economic efficiency significantly. Each phosphorus application increased yield by 3.2% -21.5% and increased by 173-1 724 yuan / hm2 than that without phosphorus application. The application of phosphate fertilizer could promote the nutrition of NPK Absorption, but with the increase of phosphorus application, phosphate fertilizer production efficiency and utilization rate decreased. [Conclusion] The highest phosphorus yields in Haicheng, Changtu and Zhangwu were 89, 116 and 129 kg / hm2, respectively, and the economic phosphorus application rates were 77, 98 and 100 kg / hm2, respectively.