采用二次饱和D-最优设计方案,研究青杂3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,确定了青杂3号高产栽培技术优化方案:种植密度50.85~56.85万株,公顷,尿素施用量168.75~199.79kg/hm^2,磷酸二铵施用量444.38~496.13kg/hm^2。各因素对产量的影响程度依次为密度〉磷肥〉氮肥。
For seeking the high- yield cultivating technique of B. napus hybrid Qingza No. 3 quadratic regression combination design was used to study quantity relation between yield and main cultivating technique(the density and amount of fertiliver) a mathematical model of the main factors and yield was established. According to the model the suitable density is 5.085 ~ 5.685 × 10^5 plants/hm^2 and the suitable amount of using urea are 168.75 kg/hm^2 and 444.38 ~496.15 kg/hm^2 respectively. The factor order of influencing on yield is the density 〉 P 〉 N.