摘要
运用旋转回归设计研究栽培因素对群体中茎、分枝产量形成的影响 ,表明 ,播期、密度、施氮量、施磷量、施钾量对甘蓝型杂交油菜群体中茎、分枝各个部分产量的影响各不相同。 5个栽培因素对群体中主茎产量、一次分枝产量、分枝产量的影响呈多因素的数学关系 ,而对群体中二次分枝产量的影响则不存在。不同产量水平下 ,群体中茎、分枝各个部分产量间存在极显著差异 ,而占群体产量的比例间变化很小。主茎产量、一次分枝产量、二次分枝产量、分枝产量占群体产量的比例平均分别为 16 81%、6 4 49% ,18 6 9% ,83 18%。主茎产量、一次分枝产量、二次分枝产量、分枝产量与群体产量间均呈极显著正相关 ,群体产量的增加是群体中茎、分枝产量共同增加的结果 ,同时群体中茎。
The effects of sowing date, density, applied amount of N fertilizer, applied amount of P 2O 5,applied amount of K 2O on each part yield of main stem and branch are different in population of hybrid rape.There is multiple factor mathematical relationship in effect of five main cultivating factors on main stem yield, first branch yield, branch yield of population, and there isn't multiple factor mathematical relationship between effect of five main cultivating factors on secondary branch yield of population. There is an extremely significant difference between each part yield of main stem and branch of population and percentage change for each part yield of stem and branch of population to population yield is very small. Average percentages of main stem yield, first branch yield, secondary branch yield, branch yield to population yield are 16.81%,64.49%,18.69%,83.18%respectively.There is an extremely significant positive correlation between main stem yield, first branch yield, secondary branch yield, branch yield and population yield. To increase population yield must increase each part yield of stem and branch, furthermore there is interrelation between each part yield of stem and branch.
出处
《山地农业生物学报》
2000年第2期83-89,共7页
Journal of Mountain Agriculture and Biology
基金
贵州省"九五"攻关项目
关键词
油菜
主茎
分枝
产量形成
播期
密度
施肥
hybrid rape
cultivating factor
yield composition
correlation analysis
mathematical models
