小麦籽粒灌浆过程的不同数学模型模拟比较

Comparison of Different Mathematical Equations for Simulating the Qrain Filling Process of Wheat

为了寻找描述灌浆过程和灌浆特性的最佳数学模型,更好地揭示小麦产量、品质及其生长发育特性,用Logistic、多项式回归和Richards三个方程分别对小麦矮抗58的籽粒灌浆过程进行拟合。结果表明,三个方程对小麦矮抗58的籽粒灌浆过程都能拟合且达到极显著水平;相比之下用Richards方程拟合,决定系数最大,且能显著降低离回归平方和,因此拟合效果最好,能更好地反映品种的灌浆特性。

The filling process of wheat grain are always simulated by Polynomial Regression, Logistic Equation and Richards Equation. To seek the best mathematical model for describing and study the grain filling process of wheat, the grain filling process of wheat Aikang58 was simulated respectively by these three Equations. The results showed that the grain filling process of wheat aikang58 could be descuibed by the 3 equations respectively and the curves were all highly significant. By comparing the curve drawn by the observed with the curves simulated by different equations, it was found that the Richards equation was the most suitable equation for simulating the filling process of wheat.