灌溉排水学报2026，Vol.45Issue(7)：10-18,9.DOI:10.13522/j.cnki.ggps.2025341
河西走廊春玉米需水量和灌溉需水量时空变化研究
Spatiotemporal variations in water requirement and irrigation water requirement of spring maize in Hexi Corridor
摘要
Abstract
[Objective]The Hexi Corridor is an arid agricultural region in Northwest China,with spring maize being the dominant crop and the largest water consumer.Affected by ongoing climate warming,meteorological conditions in the region have changed substantially over recent decades,exerting feedback effects on crop water consumption and influencing sustainable agricultural development.This paper analyses the spatiotemporal variations in water requirement and irrigation water requirement of spring maize under the influence of climate warming in this region.[Method]The analysis was based on daily meteorological data collected from 1971 to 2024 from 17 meteorological stations across the region,and spring maize growth traits observed from 1991 to 2024 from three field agrometeorological stations.The single crop coefficient method and ArcGIS spatial analysis technology were used to analyse the spatiotemporal variations in effective precipitation(Pe),crop water requirement(ET),and irrigation water requirement(Ir)of the crop.[Result]①Temporally,there was no significant variation in Pe during the spring maize growing season,with a regional average of 111.6 mm.Spatially,Pe increased from the northwest to the southeast.②The regional average ET was 682.7 mm.Temporally,ET decreased from 1971 to 1992 followed by a continuous increase from 1993 to 2024.Spatially,it decreased gradually from the northwest to the southeast.③The average Ir was 570.0 mm;it had increased at a rate of 10.4 mm per decade.Spatially,Ir decreased from the northwest to the southeast.④The irrigation demand index of the crop was high during its entire growth period.[Conclusion]As Northwest China undergoes warming and wetting,the temporal variation in spring maize ET is significantly correlated with mean wind speed and air temperature.Ir is positively correlated with air temperature,mean wind speed,and sunshine duration,and negatively correlated with effective precipitation.Climate warming has resulted in an increase in irrigation water demand of spring maize,further aggravating the imbalance between agricultural water supply and demand in the region.关键词
气候变化/春玉米/河西走廊/有效降水量/需水量Key words
climate change/spring maize/Hexi Corridor/effective precipitation/water requirement分类
农业科技引用本文复制引用
贾建英,马玉龙,张雅馨,方锋,王鹤龄,赵鸿,周忠文,王莺,殷雪莲,王帆,黄鹏程..河西走廊春玉米需水量和灌溉需水量时空变化研究[J].灌溉排水学报,2026,45(7):10-18,9.基金项目
中国气象局创新发展专项(CXFZ2024J056) （CXFZ2024J056）
甘肃省科技计划项目(25ZDFA011,25ZYJA035,24YFFA052,25JRRA1113,21JR7RA708,24JRRA1181) （25ZDFA011,25ZYJA035,24YFFA052,25JRRA1113,21JR7RA708,24JRRA1181）
甘肃省气象局创新团队(GSQXCXTD-2026-01) （GSQXCXTD-2026-01）
