异常气温作用于水稻一维能量模型的数值分析

应用动力学方程建立四川内江市水稻的生长模型，通过FORCAL和MATLAB对方程参数拟合，并进行数值分析和定性分析，为水稻产量预报和气温对水稻生物量的影响评估提供科学依据。在传统的一维能量模型基础上，将水稻对外界能量的摄取能力与水稻生长季中的气温变化规律联系起来，得到水稻的生长曲线x（t），并通过相平面轨迹得到x—T曲线，定性分析水稻的临界气温和最快生长率出现时间。通过低温对水稻分蘖期和高温对生殖生长期影响的比较，得出如下结论：水稻后期受高温影响比前期受低温影响严重。

Numerical analysis on one-dimensional energy model of rice under anomaly temperature

Basing on dynamical equation,the rice growth models of Neijiang were estalished,the parameter of the equation was matched by FORCAL and MATLAB to make the numerical and qualitative analysis.On the basis of traditional one-dimensional energy model,ability to take the energy and the temperature change rules during the growth of rice were connected to get the rice growth curve x(t),and the curve x-T by phase-plane trajectory was gotten to qualitative analyze the the critical temperature and the appearing time of the fastest growth rate of rice.Through the comparison of the impact of the low temperature on rice tillering stage and high temperature on reproductive growth stage,the results were gotten: the influence of high temperature on reproductive growth stage was more serious than low temperature on tillering stage.