密度及施氮、钾量对甘蓝型杂交油菜成熟期根冠比的影响  

Effect of Density Nitrogen and Potassium Application on Ratio of Root to Shoot of Hybrid Rape (B.napus) in Mature Stage

作　　者：赵继献[1] 朱文秀[1] 王华[1] 

机构地区：[1]贵州省油料科学研究所

出　　处：《贵州农业科学》1998年第6期23-25,共3页Guizhou Agricultural Sciences

摘　　要：运用三元二次通用正交旋转组合设计研究密度、施氮量、施钾量对甘蓝型杂交油菜成熟期根冠比的影响，并建立相应的数学模型。结果表明，仅有施氮量的一次效应对根冠比的影响达到极显著水平。三因子对根冠比影响大小的顺序为氮肥＞钾肥＞密度。根冠比与产量间呈极显著负相关。The effect of density, nitrogen and potassium application on ratio of root/shoot in the mature stage in hybrid rape of B. napus was analyzed by the quadratic orthogonal rotational regression combination design and the relevant mathematical model to be established. The results showed that the influence of nitrogen application once to root/shoot reached at highly significant difference. The order of these factors on root/shoot was as nitrogen >potassium > density. The ratio of root/shoot to yield was highly significant negative correlation.

关 键 词：根冠比 成熟期 高产栽培 油菜 密度 施肥 

分 类 号：S565.406.2[农业科学—作物学]