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试验采用二次回归正交旋转组合设计,研究了耐旱型玉米子粒产量与密度(x1) 、播期(x2) 、氮肥(x3) 、磷肥(x4) 、钾肥(x5) 五因素的定量关系,建立了产量形成的密度、播期、肥料反应模型,解析了各因素对产量的主效应及互作效应,寻出定量生产水平下的最佳农艺措施。本文得出的耐旱型玉米高产栽培措施为:每公顷植6 ～9 万株,3 月15 日～30 日播种,每公顷施尿素450 ～675 kg 、磷肥( 过磷酸钙)675-0 ～1 012-5 kg 、钾肥( 氯化钾)112-5 ～225-0 kg 。
The quadratic regression orthogonal rotation combination design was used to study the quantitative relationship between the yield and the density (x1), sowing date (x2), nitrogen fertilizer (x3), phosphate fertilizer (x4) and potassium fertilizer (x5) The model of density, sowing date and fertilizer response was established. The main effects and interaction effects of various factors on yield were analyzed, and the best agronomic measures at the level of quantitative production were found out. The high-yielding cultivation measures for drought-tolerant maize obtained in this paper are: 60000 to 90000 plants per hectare, sowing from March 15 to 30, 450 to 675 kg of urea per hectare, 675 to 060 kg of phosphate fertilizer (superphosphate) 1 012-5 kg, potash (potassium chloride) 112-5 ~ 225-0 kg.