水稻拔节至抽穗期叶片着生状态的数学模型模拟比较研究

Comparison Research of Mathematical Equations for Simulating the Leaf Angle of Rice

[目的]为了寻找描述水稻叶片着生状态特性的最佳数学模型,更好地揭示水稻生长过程中株形特性。[方法]以杂交稻品种B优827为试验对象,用Logistic、渐进回归、二次曲线、S曲线、逻辑斯蒂和Gauss 6个方程分别对水稻叶片着生角度进行拟合,并比较了不同方程的拟合效果。[结果]6个方程对B优827的叶片着生角度都能拟合且达到极显著水平(P<0.01)。相比之下,Gauss模型拟合决定系数最大。[结论]Gauss模型拟合效果最好,能更好地反映品种的叶片着生状态特性。

The research aimed to seek the best mathematical model for describing the leaf angle of rice so as to reveal the characteristics of plant shape during the growth of rice. [ Method] With the hybrid rice B You 827 as the material, the growing process of rice leaf angle was simulated by six equations （Logistic equation, gradually regression equation, conic equation, S curve equation, logistic Sendy equation and gauss equation） respectively. And the fitting effect of different equations was contrasted. [ Result ] The leaf growing angle of rice could be described by 6 equations respectively. And the curves were all highly significant （P 〈0.01）, The determinant coefficient sinadated by Gauss equation was the highest comparatively. [Conclusion] It was found that Gauss equation was the most suitable equation for simulating the leaf insertion growing angle of rice.