摘要
为了合理优化江汉平原小麦播种期,提升小麦适应气候变化能力,基于气象适宜度评价模型,对比传统播种期和3种迟播条件下江汉平原小麦的主要发育期温度、降水、日照等气象要素的适宜度,及综合适宜度时空分布特征。结果表明,气候变化提升了小麦温度、降水适宜度,但降低了日照适宜度;适度推迟播种期有助于改善气象适宜度,其中11月11日播种的适宜度最高,其次为11月21日和11月1日,主要表现为小麦拔节期—乳熟期的温度适宜度和降水适宜度升高。与10月21日的传统播期相比,推迟20 d左右播种有利于改善江汉平原地区冬小麦种植的气象适宜性,可降低产量形成期的气象灾害风险。
In order to optimize wheat sowing date in the Jianghan Plain,enhance the adaptability to climate change,and promote wheat yield and quality,the temporal and spatial characteristics of meteorological suitability in winter wheat were compared based on the meteorological suitability evaluation model.Results showed that,climate change could increase the temperature suitability and precipitation suitability,but reduced that of sunlight.Delaying the sowing date could appropriately improve the meteorological suitability.Among them,November 11th was the best sowing date,next was November 21st and November 1st,by enhancing the temperature and precipitation suitability from the jointing to maturity stage.Compared with the traditional sowing date(October 21st),delaying sowing for about 20 days(November 11th)is beneficial for improving the meteorological suitability in the Jianghan Plain.
作者
夏彦
刘凯文
叶佩
邓艳君
肖潇
耿一风
吴启侠
XIA Yan;LIU Kaiwen;YE Pei;DENG Yanjun;XIAO Xiao;GENG Yifeng;WU Qixia(College of Agriculture,Yangtze University,Jingzhou,Hubei 434025;Wuhan Regional Climate Center,Wuhan 430070;Jingzhou Agro-meteorology Experiment Station of Hubei Province,Jingzhou,Hubei 434025)
出处
《中国农学通报》
2025年第4期102-107,共6页
Chinese Agricultural Science Bulletin
基金
湖北省自然科学基金气象联合基金项目(2022CFD126)
中国气象局创新发展专项项目(CXFZ2024J049)。
关键词
江汉平原
冬小麦
播种期
气象适宜度
Jianghan Plain
winter wheat
sowing date
meteorological suitability
