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采用正交旋转组合设计，对不同品种类型玉米夏播制种的氮磷钾肥料三要素进行优化量比探讨。结果表明：玉米夏播制种的增产效应，中早熟型是：磷＞ 氮＞ 钾；中晚熟型是：氮＞ 磷＞ 钾。获得掖单２号制种产量高于５ ６２５ｋｇ／ｈｍ ２ 的施肥区间是：氮（Ｎ）１８７．５～２２２．０ｋｇ／ｈｍ ２；磷（Ｐ２Ｏ５）１４２．５～１６３．５ｋｇ／ｈｍ ２，钾（Ｋ２Ｏ）１４８．５～１７５．５ｋｇ／ｈｍ２；Ｎ∶Ｐ２Ｏ５∶Ｋ２Ｏ＝ １∶０．７５∶０．７９。掖单１３号制种产量高于３ ６００ｋｇ／ｈｍ ２ 的施肥区间是：氮（Ｎ）２３１．０～２６２．５ｋｇ／ｈｍ ２，磷（Ｐ２Ｏ５）１３０．５～１５４．５ｋｇ／ｈｍ２，钾（Ｋ２Ｏ）１２０．０～１４８．５ｋｇ／ｈｍ２，Ｎ∶Ｐ２Ｏ５∶Ｋ２Ｏ＝ １∶０．５８∶０．５４。
Using orthogonal rotation combination design, the optimization of the three elements of nitrogen, phosphorus and potassium fertilizers for different types of summer maize sowing was discussed. The results showed that the yield-increasing effect of summer sowing seeds was: P> N> K; the middle and late-maturing forms were: N> P> K. Obtained Yedan 2 seed production of more than 5 625kg / hm 2 fertilization interval: nitrogen (N) 187.5 ~ 222.0kg / hm 2; phosphorus (P2O5) 142.5 ~ 163.5kg / hm 2, Potassium (K2O) 148.5-175.5 kg / hm2; N: P2O5: K2O = 1: 0.75: 0.79. The yield of Yedan 13 with seed yield above 3 600 kg / hm 2 was 231.0 ~ 262.5 kg / hm 2 for nitrogen (N), 130.5 ~ 154.5 kg / hm 2 for phosphorus (P 2 O 5) K2O) 120.0 to 148.5 kg / hm2, N: P2O5: K2O = 1: 0.58: 0.54.