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采用单因素随机区组设计对豫玉27号(原名洛单94 1)进行密度试验,结果表明:该品种对密度具有广适性,适宜种植密度为45000～75000株/hm2。采用N、P、K三因素旋转组合设计,通过计算机模拟寻优,建立了豫玉27号的产量—施肥量数学模型;分析了N(x1)、P(x2)、K(x3)的主效应及交互效应与产量的关系,它们对产量的影响大小依次为N、P、K。筛选出玉米产量大于等于10800kg/hm2的最优方案为:N393.15～399.15kg/hm2、P2O5171.90～175.05kg/hm2、K2O167.25～174.60kg/hm2,其比例为:2.3∶1∶1。
The single factor randomized block design was used to test the density of Yuyu No.24 (formerly Luodian 94 1). The results showed that the variety had wide adaptability to density and suitable planting density was 45000 ~ 75000 plants / hm2. By using N, P, K three-factor rotation combination design, the yield-fertilizer mathematical model of Yuyu 27 was established by computer simulation. The main parameters of N (x1), P (x2) and K (x3) Effects and interaction effects and yield relationship, their impact on the size of the order of N, P, K. The optimal selection of maize yield more than 10800kg / hm2 was: N393.15 ~ 399.15kg / hm2, P2O5171.90 ~ 175.05kg / hm2, K2O167.25 ~ 174.60kg / hm2, the ratio of which was 2.3:1 1.