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应用二次回归通用旋转组合设计，对影响玉米生产的密度、氮肥、磷肥三项主要因素进行多年多点试验，建立陇东旱地春玉米不同生态区域及不同种植方式产量形成的函数，并获得了不同。生产水平的优化栽培方案．
The quadratic regression general rotation combination design was used to conduct multi-year and multi-point experiments on the three main factors that affect the density, nitrogen and phosphorus of corn production. The function of yield formation in different ecological regions and different cropping patterns of spring maize in east Gansu was established. different. Optimized cultivation plan of production level.