贵州省中东部水稻有效积温对气候变化的响应

Response of rice effective accumulativetemperature to climatechange in central and eastern Guizhou Province

基于1961~2016年贵州省62个气象站点逐日气温观测资料,运用趋势分析法、空间插值法、小波分析法研究了贵州省中东部水稻有效积温对气候变化的响应。研究表明:56年间,贵州省中东部水稻秧苗期、拔节孕穗期及总生长期的有效积温均呈缓慢上升趋势,而移栽分蘖期和抽穗成熟期呈下降趋势。不同年代不同生长阶段的水稻有效积温变化呈波动起伏特点。水稻各生长阶段及总生长期的水稻有效积温变化空间格局存在明显空间异质性。水稻秧苗期、移栽分蘖期、拔节孕穗期、抽穗成熟期及总生长期有效积温变化主周期分别为29a、29a、28a、27a和28a。

The response of rice effective accumulative temperature to climate change in central and eastern Guizhou Province was analyzed by the method of trend analysis, spatial interpolation and wavelet analysis based on the daily mean temperature observation data of 62 meteorological stationsfrom 1961 to 2016. The study showed that: the effective accumulative temperature of rice in seedling stage, jointing booting stage and total growth stage showed a slightincreasing trend, while tillering stage and heading stage presented a decline trend in central and eastern Guizhou Province during the past 56 years. There was a fluctuating trend of rice effective accumulated temperature in different ages in different growth periods.Thespatial patterns of effective accumulative temperature change for rice in each growth stage and total growth period were different.The primary periods of effective accumulative temperature change in the seeding stage, tillering stage, jointing booting stage, heading stage and total growth stage were 29 a, 29 a, 28 a, 27 a and 28 a, respectively.