栽培因子对甘蓝型杂交油菜二次分枝产量、数目和角果数的影响

Effects of cultivation factors on yield,number and pod number of secondary branches in hybrid swede rspeseed

运用五元二次正交旋转组合设计 ,研究了播期、密度、施氮量、施磷量、施钾量对甘蓝型杂交油菜二次分枝产量、二次分枝数、二次分枝角果数的影响。结果表明 ,5个栽培因子与 3个目标性状间不存在多因子的数学关系。分析各单因子对目标性状的影响发现 ,播期和施磷量对二次分枝产量的影响分别达到极显著和显著水平 ,密度和施氮量对二次分枝数的影响分别达到极显著和显著水平 ,各因子对二次分枝角果数的影响未达到显著水平。二次分枝角果数与二次分枝数间 ,二次分枝产量与二次分枝数、二次分枝角果数间 ,群体产量与二次分枝角果数、二次分枝产量间均呈极显著正相关。

The penta factorial quadratic orthogonal rotary combination design was used to investigate the effects of sowing dates, planting densities and applied amounts of N, P 2O 5 and K 2O on yield, number and silique number of secondary branches in hybrid swede rapeseed. The results showed that there was no relationship between the 5 cultivation factors and characters studied. However, the analysis of effect of individual factors indicated that the sowing date and applied N amount exerted an extremely significant or significant effect on yield of secondary branches, respectively. All the cultivation factors studied had no significant effect on silique number of secondary branches. There was a significant positive correlation between the number and silique number of secondary branches, yield and number or silique number of secondary branches, population yield and silique number or yield of secondary branches.