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研究以河南省17个气象站点的1980年-2004年日气象资料为基础,借助GIS的空间分析功能,采用AEZ模型定量计算河南省县域的夏玉米光合、光温生产潜力,并结合县域尺度的夏玉米实际产量数据,分析各县市夏玉米光合、光温资源利用率的空间差异,对河南省夏玉米的光合光温资源利用效率进行评价。讨论了河南省夏玉米的光合、光温资源利用效率有着一定的空间分布规律,且与生产潜力图有着较大的空间差异,各县域的资源利用率也差异显著的原因。结果表明:①夏玉米的光合、光温生产潜力县域之间差异明显,且二者均表现出从东南向西北递增的空间分异规律;②县域夏玉米的光合、光温资源利用效率呈现出与相应潜力值大体相反的空间分布,即由西向东、从南至北大体增加的趋势,且全省平均光合、光温资源利用率分别为15%、65%,有进一步提高的空间。
Based on the meteorological data of 17 meteorological stations in Henan Province from 1980 to 2004, the AEZ model was used to quantitatively calculate the potential of photosynthesis and light-temperature production of summer maize in Henan Province by means of the spatial analysis function of GIS. Summer maize actual production data to analyze the spatial variability of summer maize photosynthesis and light temperature and temperature utilization efficiency in counties and cities and evaluate the utilization efficiency of photosynthetic light and temperature of summer maize in Henan Province. The utilization of photosynthetic and light-temperature resources of summer maize in Henan province is discussed. The utilization efficiency of light-temperature resources has certain spatial distribution, and there is a big spatial difference with the production potential map. The utilization ratio of resources in counties is also significantly different. The results showed that: (1) There was significant difference in the potential of summer maize photosynthesis and light-temperature productivity, and both of them showed the spatial variation pattern from southeast to northwest; (2) The efficiency of photosynthesis and light-temperature resource utilization of summer maize The spatial distribution roughly opposite to the corresponding potential value, that is, from west to east and from south to north generally increases, and the average utilization rate of photosynthetic and light-temperature resources in the province is 15% and 65% respectively, which has room for further improvement.