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采用正交设计方法，以种植密度和氮肥用量为试验因子，对杂交玉米南试８４７和阳单８２的产量进行研究，结果表明，在酸性瘦瘠红壤土生产田上高产的最佳种植密度和施氮量：南试８４７为亩植５５００株和亩施纯氮３０ｋｇ；阳单８２为亩植５０００株和亩施纯氮３０ｋｇ。
Orthogonal design method was used to study the yield of hybrid corn Nanxun 847 and Yangdan 82 by using planting density and nitrogen fertilizer as experimental factors. The results showed that the best planting density and yield of high yield in acid lean red loam soil Nitrogen content: South test 847 mu planted 5500 acres and pure nitrogen Mushu 30kg; Yang Shan 82 acres planted 5000 plants and Mushu pure nitrogen 30kg.