以吉林省通榆灌溉试验站2016年度玉米膜下滴灌“3414”田间试验数据为依据，建立玉米施肥量（氮、磷、钾）与产量的多元肥料效应函数模型，求解施肥参数，分析各肥料效应函数模型的拟合程度、最高产量、最佳经济产量及产投比，筛选出N、P、K肥的最优肥料效应函数模型。研究结果表明：三种肥料对通榆灌溉试验重点站玉米产量的影响顺序为N > P2O5 > K2O，在一定范围内增施肥料有利于玉米增产；三元二次施肥效应函数模型拟合程度较好，回归显著，可利用一元及二元肥料效应函数模型作为辅助、补充手段进行玉米施肥方案优化；利用三元二次肥料效应函数模型获得最佳经济产量12016.74kg/ha，施N 164.74kg/ha、P2O5 68.73kg/ha、K2O 61.00kg/ha，投入肥料价值1465.10元，产投比8.86；本项研究成果可提高肥料的利用率，降低生产成本，有效指导当地农业生产。

According to “3414”field experiment in Tongyu Irrigation Experiment Station, Jilin Province,multiple fertilizer effect function model for maize fertilization (N, P, K) and yield was established，the fertilizer parameters were solved，the best fitting degree, the highest yield, the best economic yield and the ratio of production and invest of each fertilizer effect function model were analyzed,the optimal fertilizer effect function model of N, P, K fertilizer was selected.The results of the study show that: The order of influence of three fertilizers was N> P2O5> K2O on maize yield,increasing fertilizer was beneficial to increase maize yield Within a certain range;The fitting degree of three- factor fertilizer model was good and regression significant,one-and two-element fertilizer effect model can be used as supplement and supplement to optimize maize fertilization scheme;The best economic yield from three- factor fertilizer model was 12016.74kg/ha,the recommended fertilization parameter was N 164.74kg/ha、P2O5 68.73kg/ha、K2O 61.00kg/ha,fertilizer value was 1465.10 yuan/ha,the ratio of production and invest was 8.86;The results of this study can improve the utilization of fertilizer, reduce production costs and effectively guide the local agricultural production.