徐延红,李树岩.气候变化对河南省小麦和玉米气候资源利用效率的影响[J].干旱地区农业研究,2019,37(5):218~225
气候变化对河南省小麦和玉米气候资源利用效率的影响
Impact of climate change on climatic resources utilization efficiency of wheat and maize in Henan Province
  
DOI:10.7606/j.issn.1000-7601.2019.05.32
中文关键词:  气候变化  小麦  玉米  气候资源利用效率  河南省
英文关键词:climate change  wheat  maize  utilization efficiency of climate resource  Henan Province
基金项目:中国气象局河南省农业气象保障与应用技术重点实验室开放基金项目(AMF201905);国家重点研发计划子课题(2017YFD0300304)
作者单位
徐延红 CMA Henan Key Laboratory of Agrometeorological Support and Applied Technique, Zhengzhou Henan 450003, China
Luoyang Meteorological Bureau, Luoyang, Henan 471000, China 
李树岩 CMA Henan Key Laboratory of Agrometeorological Support and Applied Technique, Zhengzhou Henan 450003, China
Henan Institute of Meteorological Sciences, Zhengzhou, Henan 450003, China 
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中文摘要:
      基于1981—2016年河南省29个农业气象试验站逐日气象数据和小麦、玉米产量资料,分析气候变化背景下小麦、玉米的光、热、水气候资源利用效率,计算各气候因子对气候资源利用效率的贡献率和气候资源利用率综合指数,进行气候资源利用效率综合评估。结果表明:小麦生长季光能资源利用效率(LUE)为1.14~1.77 kg·MJ-1,热量资源利用效率(HUE)为1.3~2.5 kg·℃-1·d-1·hm-2,降水资源利用效率(PUE)为8~43 kg·mm-1·hm-2,玉米生长季内LUE为1.8~2.5 kg·MJ-1HUE为1.32~1.78 kg·℃-1·d-1·hm-2PUE为9.5~15.1 kg·mm-1·hm-2。豫北、豫东地区LUE、HUE、PUE均高于豫西、豫南地区。对小麦、玉米气候资源利用效率贡献最大的分别是积温和降水。小麦生长季气候资源利用效率综合指数(CUE*)在0.24~0.50,玉米生长季CUE*在0.21~0.31,区域内差异明显,提高小麦HUE和玉米PUE有助于提高气候资源综合利用效率。
英文摘要:
      The tempo-spatial characteristics in light utilization efficiency (LUE), heat utilization efficiency (HUE), and precipitation utilization efficiency (PUE) of wheat and maize were studied based on crop production, total solar radiation, accumulated temperature and precipitation during crop growing season from the observed meteorological and crop data at 29 stations during 1981 to 2016 in Henan province. Subsequently, the contribution rates of the changes in climate resource to the change in LUE, HUE and PUE were calculated with the statistical regression method. Finally, climate resource utilization efficiency was comprehensively evaluated. The study results showed that LUE of wheat varied from 1.14 to 1.77 kg·MJ-1, HUE varied from 1.3 to 2.5 kg·℃-1·d-1·hm-2, and PUE varied from 8 to 43 kg·mm-1·hm-2 in Henan province. The LUE of maize varied from 1.8 to 2.5 kg·MJ-1, HUE varied from 1.32 to 1.78 kg·℃-1·d-1·hm-2 and PUE varied from 9.5 to 15.1 kg·mm-1·hm-2. The areas with high values of LUE, HUE and PUE occurred in the northern and eastern parts of Henan, while the low value areas were in the west and south. Accumulated temperature and precipitation were the most important factors affecting climatic resources utilization efficiency of wheat and maize, respectively. Comprehensive Utilization Efficiency Index (CUE*) of wheat varied from 0.24 to 0.50, and CUE* of maize varied from 0.21 to 0.31, and there was a great difference among regions. The improving of HUE of wheat and PUE of maize helped enhanced comprehensive utilization efficiency of climatic resources.
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