通过试验研究,阐明了在低肥力土壤条件下,氮磷钾营养元素互作、单作对高产杂交玉米产量、效益、植株和籽粒氮磷钾含量与吸收量、肥料和土壤氮磷钾当季利用率等影响,初步确定出600.00～700.00kg/667m2、700.00～800.00kg/667m2、800.00～830.00kg/667m2或以上3个产量层次水平相应施肥指标和产量构成因子指标,其意见对如何提高中低产田地生产力水平及挖掘玉米产量潜力,实现玉米粮食安全生产将会产生一定的指导性和借鉴性。 Through experiment and research, it is clarified that under the conditions of low fertility soil, the interaction of N, P and K nutrient elements, the yield and benefit of monoculture on high yielding hybrid maize, NPK content and uptake of plant and grain, seasonal utilization of NPK and fertilizers Rate and so on, the corresponding fertilization index and yield component index of 600.00 ~ 700.00kg / 667m2, 700.00 ~ 800.00kg / 667m2, 800.00 ~ 830.00kg / 667m2 or above are determined preliminarily. The opinions on how to improve middle and low yield Field productivity and tap the potential of corn production and achieve corn grain safety will produce some guidance and reference.