杂交油菜新品种青杂5号高产栽培模式研究

采用二次饱和D-最优设计方案，研究了青杂5号产量与种植密度、施肥量之间的关系，建立了各因素与产量指标间的数学模型，进而确立了青杂5号高产栽培合理密度和施肥量的优化方案：田间种植密度19．5万～22．5万株／hm^2，尿素施用量146．3-202．5kg／hm^2，磷酸二铵施用量281．3-337．5kg／hm^2。

Study on Cultivating Model with High-yield of Hybrd Rape Qingza 5

For seeking the cultivating technique with high-yield of rape hybrid Qingza 5 quadratic regression combination design was used to study quantity relation between yield and main cultivating technique (the density and the appolication rate of N, P) also mathematical model of the main factors and yield was established. And then the model made clear that the suitable cultivating technique norm of the excellent combination for the high-yield(more than 5 000 kg/hm2)were density 1.95×105～2.25×105 plants/hm2, the appolication rate of N 146.3～202.5 kg/hm2, P 281.3～337.5 kg/hm2.