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选取淮河流域33个县市1961—2005年的逐日气象数据,运用模糊数学和空间插值方法,对淮河流域双季稻的温度、降水、日照和气候适宜度进行了研究。结果表明:温度和降水是淮河流域双季稻生长的关键气候因子,早、晚稻各气候因子适宜度地域差异明显;其中,早稻气候适宜度由中部平原向东部沿海和西部山区递减,晚稻气候适宜度由南向北递减;温度适宜度以0.01(10a)-1的速率上升,说明温度对淮河流域水稻生长发育产生正效应;日照适宜度以>0.02(10a)-1的速率下降,总的气候适宜度呈下降趋势。
The daily meteorological data of 33 counties and cities in the Huaihe River Basin from 1961 to 2005 were selected and the temperature, precipitation, sunshine and climate suitability of double cropping rice in the Huaihe River Basin were studied by fuzzy mathematics and spatial interpolation method. The results showed that temperature and precipitation were the key climatic factors for the growth of double cropping rice in the Huaihe River Basin, and the regional differences of suitable climatic factors in early and late rice were obvious. Among them, the climatic suitability of early rice decreased from the central plains to the eastern coastal areas and western mountainous areas, Degrees decreased from south to north. Temperature suitability increased at a rate of 0.01 (10a) -1, indicating that temperature had a positive effect on rice growth and development in the Huaihe River Basin. Sunshine suitability decreased at a rate of> 0.02 (10a) -1, Climate suitability is declining.