期刊论文

Characteristics of the Beta function for nonlinear effects of temperature on crop phenological development

Zhuang, H.-Y.

中文

生态学报

Acta Ecologica Sinica

1000-0933

2008

28

8

3737-3743

10.3321/j.issn:1000-0933.2008.08.029

江苏省教育厅自然科学基金资助项目(02KJB210006)； 扬州大学江苏省作物遗传生理重点实验室开放课题资助项目(02738800352)~~；

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Beta模型在反映温度对作物发育非线性效应方面被广泛采用。为使该函数满足在设定的最适温度下函数值取值最大的条件,得到Beta模型的特殊形式。分析认为,该模型满足温度对作物发育影响的三基点规律、较好地反映发育速率对温度变化的响应特征、温度三基点在模型中应比较明确的3个规范性要求,具有较强的变化特征表达能力,可以近似表达二次函数、高斯函数等函数的变化。分析了Beta模型与积温法计算结果的关系。通过对Beta模型一阶和二阶导数的分析,明确了其变化特征,指出已有研究对参数P生物学意义解释的不妥之处,提出作物发育速度对温度的非线性响应是感温性的本质特征的观点,并从新的视角肯定了参...

Beta function was first used by Gao Liangzhi in China in 1989 to describe non-linear effects of temperature on rice phenological development and since then widely used in many agricultural crops such as rice, maize and wheat. The specialized form of the Beta function is obtained in order to attain the maximum value off （T） when T equals to the optimal temperature. Our analysis in this paper indicated that Beta function coincides with the three critical values of low, upper and optimal temperature and reflects clearly response patterns to temp...