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试验采用二次回归正交旋转组合设计,研究耐旱型玉米籽粒产量与密度、播期、氮肥、磷肥、钾肥5因素的定量关系,建立产量形成的密度、播期、肥料反应模型,解析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。该试验得出的耐旱型玉米高产栽培综合农艺措施为:密度为6~9万株/hm2,3月15~30日播种,每公顷施尿素450~675kg、磷肥(过磷酸钙)675.0~1012.5kg、钾肥(氯化钾)112.5~225.0kg。
The quadratic regression orthogonal rotation combination design was used to study the quantitative relationship between grain yield and density, sowing date, nitrogen fertilizer, phosphate fertilizer and potassium fertilizer in drought-resistant maize. The density, sowing date and fertilizer response model of yield formation were established. The main effect of factors on yield and the interaction effect, find out the best level of agricultural production under agronomic measures. The comprehensive agronomic measures for high-yielding drought-tolerant maize cultivated in this experiment are as follows: the density is from 6 to 90,000 plants / hm2, sowing from March 15 to March 30, 450 to 675 kg of urea per hectare and 675 phosphorus fertilizer (superphosphate). 0 ~ 1012.5kg, potassium fertilizer (potassium chloride) 112.5 ~ 225.0kg.