遮阴条件下金边瑞香不同光响应曲线拟合模型的比较

为利用数学模型拟合金边瑞香光响应曲线来探究金边瑞香光合特性，比较分析了指数函数模型、直角双曲线模型、直角双曲线修正模型和非直角双曲线模型模拟金边瑞香的光响应曲线的拟合度，同时比较了不同遮阴条件下金边瑞香的光响应曲线和光合特性。结果表明，4种典型的光响应模型中直角双曲线修正模型适用于金边瑞香光响应曲线模拟，且决定系数在0.99以上。综合分析比较数据，直角双曲线修正模型对金边瑞香光响应曲线拟合效果最好，在高强光条件下，结果更加准确，可作为拟合金边瑞香的光响应曲线。此外，一定的遮阴有利于金边瑞香光合利用。

The Study on Different Model Fitting Comparison of Photosynthesis Light Response Curves and Effects of Shading on Photosynthesis of Daphne odora var. marginata Mak

In order to select the appropriate model of photosynthesis light response curve to invest photosynthetic characterstics of peanut,four typical models (rectangular hyperbolic model,non-rectangular hyperbolic model,exponential model and modified rectangular hyperbolicmodel) were adopted to fit the photosynthesis light response curves of Daphne odora var. marginata Mak .Results showed that the four models could well fit the modified rectangular hyperbolic model the photosynthesis light response curves of the Daphne odora var. marginata Mak varieties(r²>0.99). According to the analysis and comparison of comprehensive data, the right-angle hyperbola modified model has good fitting property and the fitting result is accurate. Especially in the presence of high light, it can simulate the light response curve of daphroditis alloy in photoinhibition.