施氮量、密度与油菜产量关系的旋转回归分析  

Study On Yield of the Rape in Different Nitrogen and Density

作　　者：艾复清[1] 李改珍[1] 

机构地区：[1]贵州大学农学院农学系,贵阳花溪550025

出　　处：《中国农学通报》2005年第4期142-144,共3页Chinese Agricultural Science Bulletin

基　　金：贵州省"十五"攻关项目子课题"油菜亩产250公斤保优综合配套研究"(项目编号:黔科合农社字(2001)1103-01-01号)

摘　　要：运用二因素五水平回归正交旋转组合设计,进行施氮量与密度对油菜产量影响的研究。结果表明,随着施氮量、密度的增加,产量表现出快速增加→缓慢增加→缓慢减少→快速减少的趋势,施氮量的效应大于密度效应;油菜产量主要受全田有效角果数影响,二者相关系数为0.9577,决定系数达0.9171,而角粒数、粒重主要遗传因素影响;施氮量与密度的最佳组合是施氮量214.4-256.9kg/hm2,密度10.1万-11.1万株/hm2,控制在此范围内油菜产量可迭3000kg/hm2以上。Using quadratic rotational regression combination design to study the influence on yield of the rape under the different nitrogen and density. The result showed that the yield which was influenced by active silique of the field mainly provided a parabola when nitrogen and density increased, the relative index and the determine index of yield and active silique was 0.9577 and 0.9171 respectively. The study also indicated that the best combination was in the range of nitrogen from 214.4 to 256.9 kg per hm2 and density from 101 to 111 thousand individual per hm2.

关 键 词：施氮量 回归分析 产量关系 正交旋转组合设计 油菜产量 产量影响 产量表现 密度效应 相关系数 因素影响 最佳组合 角果数 角粒数 遗传 粒重 

分 类 号：S511[农业科学—作物学] O212.1[理学—概率论与数理统计]