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采用回归正交旋转组合设计的方法,研究了宁南山区旱塬地、台地冬小麦籽粒产量、蛋白质含量、经济纯收益与主要栽培因子播期、播量、施农肥量、施氮量、施磷量之间的关系。并通过对所建模型的解析和优化模拟筛选出塬地产量> 4 500 kg/hm 2、蛋白质含量>15.5% 、经济纯收益> 4 500 元/hm 2 的最佳栽培技术方案为播期8 月25 日～28 日,播量(万粒/hm 2)478.5～501,施农肥量(kg/hm 2)14 715～24 225,施氮量(kg/hm 2)166.5～189,施磷量(kg/hm 2)118.5～145.5;台地产量≥3 600 kg/hm 2、蛋白质含量≥12.0% 、经济纯收益≥3 750 元/hm 2 的最佳栽培技术方案为播期9 月1 日～9 日,播量(万粒/hm 2)372～481.5,施农肥量(kg/hm 2)33 735～37 785,施氮量(kg/hm 2)156～175.5,施磷量(kg/hm 2)168～192。
The regression orthogonal rotation combination design method was used to study the grain yield, protein content, economic net yield and sowing date, sowing amount, application amount of fertilizer, amount of nitrogen application, application rate of phosphorus in winter wheat in the dry land, The relationship between quantity. Through the analysis and optimization of the model, the best cultivation plan was sown with the output> 4 500 kg / hm 2, protein content> 15.5% and economic profit> 4 500 Yuan / hm 2. From January 25 to 28, 478.5 ~ 501 of seeding rate (kg / hm 2), 14 715-24 225 of fertilizer application rate (kg / hm 2) and 166.5 ~ 189 kg / hm 2 of nitrogen application rate The best cultivation technology scheme with the yield (kg / hm 2) 118.5 ~ 145.5, the land yield ≥3 600 kg / hm 2, the protein content ≥12.0% and the net economic profit ≥3 750 / hm 2 was sowing date September 1 From the 9th to the 9th, 372 ~ 481.5 sowing rate (kg / hm 2), 33 735 ~ 37 785 kg / hm 2 application rate, 156 ~ 175.5 kg / hm 2 nitrogen application rate kg / hm 2) 168-192.