Chinese Journal of Agrometeorology ›› 2018, Vol. 39 ›› Issue (10): 623-635.doi: 10.3969/j.issn.1000-6362.2018.10.001

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Meteorological Influencing Factors on Variation in Winter Wheat Yield in the North China Plain

WU Bing-jie, WANG Jing, TANG Jian-zhao, WANG Na, XU Lin, BAI Hui-qing, ZHENG Jun-qing, WANG Na, LI Yang   

  1. 1. College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China; 2. Chengdu Jintian Lianhua Technology Co., LTD, Chengdu 610072; 3. Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100
  • Online:2018-10-20 Published:2018-10-16

Abstract: The meteorological influencing factors on variation in winter wheat yield in the North China Plain (NCP) were investigated by developing yield?meteorological factor relationship based on statistical yield of 46 cities and daily meteorological data from 46 meteorological stations from 1988 to 2015. The results showed that statistical yield of winter wheat ranged from 3200 to 6800kg·ha?1 in 1988?2015 with higher yield in the central NCP and higher yield variation in the southern NCP. The variation in growing season main meteorological factors including sunshine hours, temperature and precipitation could account for 17%?78% of variation in the climatic yield of winter wheat with statistical significance at 54% of the cities (P<0.05). The regions with high influencing degree were mainly concentrated in the southern Hebei, southern Shandong and northeastern Henan. Precipitation during the growing period of sowing to turning-green had significant impacts on meteorological yield of winter wheat. Meteorological yield of winter wheat increased by 13-74kg·ha-1 in Tianjin, Zhumadian and northwestern Shandong if amount of precipitation during the period increased by 1%, while the meteorological yield in southern Henan and southern Shandong decreased by 16-80kg·ha-1. Minimum temperature during the growing period of turning-green to maturity had significant impacts on variation in meteorological yield of winter wheat. Average minimum temperature during the period increased by 1-C would increase meteorological yield by 50-295kg·ha-1 in Tianjin, Shijiazhuang, the eastern and western Shandong, and the western Henan, but would decrease meteorological yield by 76-124kg·ha-1 in Beijing, Tangshan and Zaozhuang. In general, the temperature had significant impact on the variation of winter wheat yield at more sites than sunshine hours and precipitation. However, there was a large spatial difference in meteorological influencing factors on variation in winter wheat yield due to complex interaction of meteorological factors, cultivar and agronomic management practices.

Key words: Yield variation, Meteorological yield, Sunshine hours, Temperature, Precipitation