不同密肥组合对广西玉米新品种兆丰588产量的影响

目的]优化玉米新品种兆丰588的种植密度和施肥水平,为进一步推广玉米新品种兆丰588提供参考.方法]采用四元二次正交旋转回归组合设计方法,研究不同种植密度、氮素水平、磷素水平和钾素水平下对玉米新品种兆丰588产量的影响.结果]4种栽培因素对兆丰588产量的影响顺序为：氮素水平＞种植密度＞磷素水平＞钾素水平.兆丰588的高产综合配套栽培措施为密度4.8万～～5.2万株/ha,施尿素560.0～660.0 kg/ha,施过磷酸钙450.0～550.0 kg/ha,施氯化钾240.0～300.0 kg/ha,可获得8250.0 kg/ha以上目标产量.结论]兆丰588在中等种植密度、氮肥充足时可获得高产.

Effects of different combination of density and fertilizer onyield of Guangxi maize variety Zhaofeng 588

Objective]The experiment was conducted to study the optimizing fertilization and planting density model of new maize variety Zhaofeng 588 in order to provide references for further promotion of new maize variety Zhaofeng 588. Method]The quadratic orthogonal rotational test with four factors was used to study the effect of differ- ent planting densities, nitrogen levels, phosphorus levels and potassiums levels on the yield of new maize variety Zhaofeng 588. Result]The order of four factors contribution to yield was： nitrogen levels〉planting density〉phosphorus levels〉potassiums level. When the planting density was 4800-5200 plants per hectare with 560.0-660.0 kg/ha car- bamide, 450.0-550.0 kg/ha calcium superphosphate and 240.0-300.0 kg/ha potassium chloride, the yield of Zhaofeng 588 could be reached 8250.0 kg/ha. Conclusion]The high yield of Zhaofeng 588 could be obtained when the plant density is medium and nitrogen is enough.