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采用四因素五水平二次正交旋转组合设计,研究密度与氮、磷、钾施用量对杂交玉米新品种顺单6号主要经济性状的影响,建立相应数学模型,得出顺单6号在中高海拔地区4月下旬播种并采用育苗移栽方式种植,单产大于800 kg/667 m2的农艺措施优化组合方案密度为4 200~4 337株/667 m2,施N16.37~23.42 kg/667 m2,施P2O512.51~16.30 kg/667 m2,施K2O 18.56~22.70 kg/667 m2。保证足够的群体密度及控氮、增钾、适磷的肥料运筹是取得高产的有效措施。
The quadratic orthogonal rotation combination design of four factors and five levels was adopted to study the effects of density and nitrogen, phosphorus and potassium application rates on the main economic traits of hybrid maize variety Shun 6. The corresponding mathematical model was established, The middle and high altitude areas were sown in late April and planted by seedling transplanting. The optimal combination density of agronomic measures with yields above 800 kg / 667 m2 was 4 200-4 337 plants / 667 m2 and N16.37-23.42 kg / 667 m2 , P2O512.51 ~ 16.30 kg / 667 m2, K2O 18.56 ~ 22.70 kg / 667 m2. To ensure adequate population density and nitrogen, potassium, phosphorus fertilizer operation is to obtain high yield and effective measures.