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

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。

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

Objective] 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 simulated 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.