密度、施氮量与播期对贵农玉008产量的互作效应

Interactive Effect of Density, Nitrogen Rates and Sowing Date on the Yield of Guinongyu 008

运用三因素二次回归正交旋转组合设计方案,研究了种植密度、施氮量、播种期对贵农玉008产量的影响。结果表明,贵农玉008产量的边际效应影响大小顺序为密度、施氮量、播期;交互作用对产量影响的大小顺序为密度与施氮量、密度与播期、施氮量与播期。综合考虑,在生产上应注意密度与施氮量的合理组合,同时结合播期,才有利于提高玉米产量。

The effects of density,nitrogen rates and sowing date on the yield of Guinongyu 008 were studied by three-factor formula designed orthogonal rotation with quadratic regression.The results showed that the rank of the varied range for marginal effect from the biggest to the smallest were density,nitrogen rates and sowing date.The rank of interactive effects on yield from the best to the worst were density and nitrogen rates,density and sowing date,nitrogen rates and sowing date.Considering comprehensively,density and nitrogen rates should be properly combined while sowing date should also be considered to improve the yield of corn.