玉米新品种福单2号密度与肥料调控栽培模型研究

Study on Regulating Cultivation Model of Density and Fertilizer for New Maize Variety Fudan No.2

采用4因子5水平旋转回归组合设计,研究密度及施肥量调控对玉米新品种福单2号产量的影响,探讨高产栽培优化方案。结果表明:在中等土壤肥力条件下,各因子对产量影响程度大小依次为N肥>密度>K肥>P肥;获得8 699.4 kg/hm2以上目标产量优化方案是密度48 318～49 974株/hm2,施纯N 381.9～412.2 kg/hm2(尿素830.2～896.1 kg/hm2),施P2O5 99.4～116.0 kg/hm2(过磷酸钙710.0～828.6 kg/hm2),施K2O 247.2～280.9 kg/hm2(氯化钾412.0～468.2 kg/hm2)。

By using rotational regression combination with four factors and five levels, the influences of regulating density and fertilizer rate on yield of new maize variety Fudan No.2 were researched, and the optimization scheme for high-yield cultivation was also discussed. The results showed that under the condition of middle soil fertility, the influence of each factor on yield was in order of N fertilizer〉density〉K fertilizer〉P fertilizer; the optimization scheme that obtained target yield of over 8 699.4 kg/hm2 was as follows： density is 48 318～49 974 plant/hm2, applying pure N with 381.9～412.2 kg/hm2 （if applying urea should be 830.2～896.1 kgghm2）, applying P2Os with 99.4～116.0 kg/hm2 （if applying calcium superphosphate should be 710.0～828.6 kg/hm2）, and applying K20 with 247.2～280.9 kg/hm2 （if applying potassium chloride should be 412.0～468.2 kg/hm2）.