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有效花朵数和结荚率的影响，并建立相应的数学模型。结果表明，密度和施氮量对有效花朵数的影响达到极显著水平，其交互作用效应也达到显著水平。三因子对有效花朵数的影响顺序为氮肥＞密度＞钾肥。对结荚率的影响中，仅有施氮量的二次项作用效应达极显著水平。高产的油菜群体，不仅有效花朵数多，而且结荚率也高。
? The effects of density,nitrogen and potassium on effective flower numbers and pod bearing percentage of hybrid rape were studied through the quadratic orthogonal rotational regression combination design and mathematical model were established.The results showed as follows.The effect of density and nitrogen on effective flower numbers reached very significant level,and their interaction reached significant level.The order of these factors on effective flower number was as nitrogen>density>potassium.The effects of pod bearing percentage,only quadratic effect of nitrogen;quantity applied reached very significant level.
出处
《贵州农业科学》
CAS
1998年第1期21-24,共4页
Guizhou Agricultural Sciences
关键词
有效花朵数
结荚率
甘蓝型油菜
密度
施肥量
effective flower number
percentage of filledpod
regression design mathematical model
high yield
