杂交中稻鞘叶比与碳氮比及产量之间关系的探讨

• 作 者: 杜永珍
• 机 构: 重庆市农科所,
• 出 处: 四川农业科技
• 发表日期: 1982年05期
• 关键词: 碳氮比 杂交中稻 回归方程式 孕穗期 田间小区试验 抽穗期 回归系数 幼穗分化期 叶鞘 回归线

我们对1980年和1981年杂交中稻“汕优2号”施氮量田间小区试验各生育期鞘叶比、碳氮比及产量之间的关系进行分析,结果表明它们之间有一定的关系。 1、各生育期鞘叶比和碳氮比之间有极显著正相关关系。(见表) 将各生育期(除抽穗期外)两年的回归方程式进行比较,在孕穗期和灌浆期两条回归方程式的标准差(s)、回归系数(a、b)均无差异,合并回归线为: 孕穗期:Y=5.07+16.98x 灌浆期:Y=0.73+29.38x 2、“汕优2号”产量与灌浆期碳氮比之间为二次抛物线关系。(见下页图)其方程

We analyzed the relationship between the ratio of sheath to leaf, C / N ratio and yield at the different growth stages of hybrid rice “Shanyou 2” in 1980 and 1981. The results showed that there was a certain relationship between them. 1, There was a significant positive correlation between the ratio of sheath to leaf and C / N in each growth period. (Table) Compare the regression equation of two years in each growth period except heading stage, there is no difference in standard deviation (s) and regression coefficient (a, b) of two regression equations at booting stage and filling stage, The regression line was: booting stage: Y = 5.07 + 16.98x filling period: Y = 0.73 + 29.38x 2. The relationship between yield and grain-to-grain carbon / nitrogen ratio of Shanyou No.2 was a quadratic parabola. (See the chart on the next page) The equation