【摘要】 以玉米新品种晋单63号为试验材料,采用二元二次正交回归旋转组合设计,研究该品种产量与种植密度、施氮量等主要栽培因素间的关系,建立了二因素与产量的数学模型:Y=10 008.063 63+63.496 87X1+245.347 70X2-684.531 61X12-116.406 59X22+35.375 37X1X2。通过寻优,确立了晋单63号最佳种植密度为78 108.2株/hm2,施氮量为300.0 kg/hm2,在该组合措施下,可获得10 137 kg/hm2的较高产量,为该品种的大面积生产提供了科学指导。并分析了各因素对晋单63号产量的影响,发现种植密度的影响大于施氮量。更多还原

【Abstract】 Study on the relation between the yield of Jindan 63 and main cultivation technique factors of planting density and nitrogen application rate was conducted by binary quadratic orthogonal regression rotation combination design using new maize variety Jindan 63 as test material.A mathematical model between two factors and yield Y=10 008.063 63+63.496 87X1+ 245.347 70X2-684.531 61X12-116.406 59X22+35.375 37X1X2 was established.The best planting density of 78 108.2 plant/hm2 and the best nitrogen application rate of 300.0 kg/hm2 were determined through optimization,and the highest yield could reach 10 137 kg/hm2 with this combined measures.We hope to perform scientific guidance for the large-area demonstration and extension of Jindan 63.In addition,the effect of every factors to the yield of Jindan 63 was analyzed,and the effect of planting density was found bigger than that of nitrogen application rate.更多还原