为探讨栽培因素对杂交油菜群体中茎枝和分枝及其各组成部分角果数的影响,1996 年,以油研7 号为材料进行了播期、密度、施氮量、施磷量、施钾量的五元二次正交旋转组合设计试验。结果表明,5 个因素对群体中主花序角果数、一次分枝角果数、分枝角果数、茎枝角果数的影响呈多因素的数学关系,而对二次分枝角果数的影响则不存在这种关系。不同产量水平下,群体中茎枝和分枝及其各个组成部分角果数占群体角果数的比例变化很小。主花序角果数、一次分枝角果数、二次分枝角果数、分枝角果数、茎枝角果数占群体角果数的比例平均分别为14.32% ,63.58% ,22.10% ,85.68% ,77.90% ,且都与群体角果数间均呈极显著正相关。说明群体角果数的增加是群体中各组成部分角果数共同增加的结果 In order to explore the effect of planting factors on the number of stalks and branches and the number of pectin in hybrid rapeseed population, the seeding date, density, nitrogen application rate, Five - element Quadratic Orthogonal Rotational Design Experiment of Potassium Fertilizer. The results showed that the five factors on the population of the main inflorescence pod number, the number of the first branch, the number of branches, the number of branches of the number of branches showed a multi-factor mathematical relationship, The number of effects does not exist in this relationship. Under different yield levels, the proportion of the number of branches and branches and their individual parts in the population changed slightly. The average number of florets of main inflorescence, primary crested fruit, secondary crested fruit, branched crested fruit and squamous cortex were 14.32%, 63.58% and 22.10% , 85.68% and 77.90%, respectively, all of which were significantly and positively correlated with the number of pods. The result shows that the increase of the number of pods in the population is the result of the common increase of the pectoral numbers of each component in the population