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根据二次通用旋转回归设计试验结果，建立了氮磷钾三要素与公顷产量关系的数学模型；得出了三者对产量的影响为磷肥〉氮肥〉钾肥；模似筛选出获得９ｔ／ｈａ时最佳经济施肥量是纯Ｎ２５８～２６５ｋｇ／ｈｍ２、Ｐ２Ｏ５１４５～１４８ｋｇ／ｈｍ２、Ｋ２Ｏ１７８～１８３ｋｇ／ｈｍ２，三者之比为１：０．５６：０．６９；同时，明确了氮磷钾对产量构成因素的影响是穗粒数＞穗数＞千粒重，故在产量构成因素中应以穗粒数为主攻因素，以充分发挥紧凑大穗型小麦穗大粒多的增产优势，其次才是穗数和千粒重。
According to the results of the second general rotation regression design, the mathematical model of the relationship between NPK and yield was established. The results showed that the three effects on yield were P fertilizer> N fertilizer> K fertilizer. The best economic fertilizer amount was N258 ~ 265kg / hm2, P2O5145 ~ 148kg / hm2 and K2O178 ~ 183kg / hm2, the ratio of the three was 1: 0.56: 0.69. Factors affecting the number of spikes> spikes> 1000-grain weight, so the yield component factors should be the number of grains per spike in order to give full play to the compact large-spike large wheat spike yield advantage, followed by the spikes and 1000-grain weight .