黄淮海地区冬小麦品种进化过程中叶片农业气象指标演化分析

利用Licor-6200便携式光合作用测定仪，对建国以来黄淮海地区不同年代有代表性的12个冬小麦品种光合速率进行了测定，确定了相应的最大光合速率，此外，利用Licor-188B辐射量子照度仪测定了不同年代冬小麦品种的叶片光学特性和比叶重。研究表明国外参数与中国实际情况存在一定差异；即使国内同一作物，不同年代不同品种导致参数差异十分明显。因此作物模型输入参数不宜直接引用国外文献结论。文中给出了中国不同年代冬小麦叶片最大光合速率等农业气象指标，为农业气象数值模式提出了多种模型参数。

Evolution of Agrometeorological Index of Winter Wheat in Huanghuaihai Region

Twelve typical winter wheat varieties in different decades in Huanghuaihai region were selected for measuring the leaf photosynthesis rate, the ratio of dry matter per leaf area and optical characteristics under suitable soil moisture and temperature conditions. The maximum photosynthesis rate of each variety was given in this paper. The result showed that it is not suitable to quote the parameters directly from foreign literatures as the basic parameters in the Chinese crop models. A set of basic parameters for the crop model was available in this research, which will provide premise for simulating winter wheat yield with crop models in the future.