通过田间小区试验,研究了不同氮磷水平的配合施用对春玉米氮、磷、钾养分吸收状况以及产量的影响。结果表明,在氮肥施用量为300～600kghm-2的范围内,随着施氮量的增加,玉米对氮、磷、钾素的吸收均增加,以处理N3P2的效果最为明显。与对照相比,氮、磷、钾素的总吸收量分别增加13.8%、14.4%和23.2%,氮、磷、钾的养分收获指数最大分别0.649、0.399和0.152。增施氮磷肥均能促进玉米产量的增加,增产幅度为8.2%～15.5%,磷肥的增产效果没有氮肥明显。每生产100kg玉米籽粒,适宜氮磷钾的养分吸收量分别N:2.56kg,P2O5:0.77kg和K2O:2.53kg,植株吸收养分适宜比例(N:P2O5:K2O)为3.33:1:3.29。 Field experiments were conducted to study the effects of different nitrogen and phosphorus levels on nutrient absorption, yield and yield of spring maize (N, P, K). The results showed that the uptake of N, P and K by maize increased with the nitrogen application rate of 300-600 kghm-2, and the effect of N3P2 treatment was the most obvious. Compared with the control, the total uptake of nitrogen, phosphorus and potassium increased by 13.8%, 14.4% and 23.2% respectively, and the maximum values ​​of nitrogen, phosphorus and potassium were 0.649, 0.399 and 0.152 respectively. The application of N and P fertilizer can all increase the yield of maize, with the yield increasing rate of 8.2% -15.5%. There is no obvious nitrogen fertilizer increase effect of P fertilizer. The N, P2O5: 0.77kg and K2O: 2.53kg N, P2O5: 0.37kg and N33: 1: 3.29 for N 100 P maize were suitable for N 100 P maize kernels.