摘要
采用二次饱和D-最优设计方案，研究青杂2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2号高产栽培合理密度和施肥量的优化方案；种植密度为田间种植密度24．3～26．7万株/hm^2，尿素施用量247．5～270kg／hm^2，磷酸二铵施用量300～412．5kg/hm^2。各因素对产量的影响依次是：密度〉磷肥〉氮肥。
For seeking the high-yield cultivating technique of hybrid rape Qingza 2, quadratic regression combination design was used to study quantity relation between yield and main cultivating technique （the density and amount of N, P）, mathematical modal of the main factors and yield were established. And then the suitable cultivating technique norm of the Optimum project for the high-yield（more than 5000kg/ha）were density 2.43 ～ 2.67 × 10^5 plants/ha,amount of N： 247.5 ～ 270kg/ha, P： 300 ～ 412.5kg/ha, The factor order of influenceing on yield is the density 〉 P 〉 N.
出处
《青海农林科技》
2006年第1期5-7,共3页
Science and Technology of Qinghai Agriculture and Forestry
关键词
杂交油菜
丰产栽培
密度
施肥量
优化方案
Hybrid rape
High-yield cultivating
Density
Amount of fertilization
Optimum project
