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对植物群体光合作用的数学模型:P_n=K/A l_n(A+bI_ve~(-KT)/A+bI_0)-rF进行了必要的数学处理,得到了一系列公式,并对所得公式的生物学意义加以分析,获得了各种内、外因素对植物群体光合作用的影响的信息: 1.随着冠层表面单叶光合速率的提高,群体光合作用存在一个极大值。欲获最大的群体光合作用,应根据作物的单叶光合速率和特定生态环境调整植物的群体结构。 2.群体光合作用的光反应能力越强(即叶片光合速率随光照强度线性提高时其速率越大),则群体光合作用能力越高:它可作为选育良种的群体的群体生理指标。 3.太阳辐射越强,群体光合作用越高。 4.存在最适叶面积系数。在植物群体中,光能的分布可能发生对Lanbet-Beer定律的偏离,故建议引入校正系数扩大群体光合作用数学模型的应用。
A mathematical model of photosynthesis of plant population was established. The mathematical model of P n = K / A l_n (A + bI_ve ~ (-KT) / A + bI_0) -rF was used to obtain a series of formulas. The significance of this study was analyzed, and the effects of various internal and external factors on the photosynthesis of plant communities were obtained: 1. With the increase of photosynthetic rate of single leaves on the canopy surface, there is a maximum value of photosynthesis in the population. For the largest group of photosynthesis, the population structure of plants should be adjusted according to single leaf photosynthesis rate and specific ecological environment. The stronger photosynthesis ability of photosynthesis (the rate of leaf photosynthesis increases linearly with light intensity), the higher the photosynthesis ability of the population: it can be used as the population physiological index of breeding population. 3. The stronger the solar radiation, the higher the population photosynthesis. 4. There is the optimal leaf area coefficient. In plant communities, the distribution of light energy may deviate from Lanbet-Beer’s law. Therefore, it is suggested that the correction coefficient be used to expand the application of the mathematical model of photosynthesis.