Study on Climatic Zoning of High-Quality Special Wheat Quality in Shandong Province before and after Climate Warming

Wang Na; Li Nan; Nan Zhenwu; Liu Kaichang; Wang Zongshuai; Xue Xiaoping; Meng Weiwei; Wang Xuqing

doi:10.14083/j.issn.1001-4942.2025.01.005

Abstract：Wheat quality climatic zoning is of great significance to making full use of regional climatic re-sources and producing high-quality wheat according to local conditions.Shandong Province is a typical region in northern China for growing strong-gluten and medium-gluten wheat varieties for special use.Climatic condi-tions of Shandong Province have changed greatly under the background of climate warming,so the wheat quali-ty zoning results need to be updated.In this study,the agro-climatic indicators for wheat quality zoning were used to comprehensively score the meteorological conditions(temperature,precipitation,and sunshine hour)of 122 meteorological stations in Shandong Province during wheat growth seasons from 1981 to 2020,and the results of agro-climatic zoning of wheat quality in Shandong Province before and after climate warming were ob-tained by ArcGIS interpolation method and the differences were compared.The results showed that whether be-fore and after climate warming,Shandong Province is always a suitable area for strong-gluten wheat and a tran-sition area of strong-and medium-gluten wheat.After climate warming,the suitable area of strong-gluten wheat in Shandong Province was greatly reduced,but the transition area of strong-and medium-gluten wheat was ex-panded,which was mainly in central Shandong and the Jiaodong Peninsula.The increase of ≥0 ℃ thermal time in wheat season and the decrease of daily temperature range in May(flowering-filling stage)were the main reasons for the decrease of overall score in wheat growth seasons.The results of this study would provide a theoretical basis for timely adjusting the suitable area of strong-gluten wheat in Shandong Province and reali-zing the bidirectional adaptation of varieties and ecological areas.