近55年豫南地区干旱时空变化及对冬小麦产量的影响

随着极端气候多发,大气变暖,气候干旱对农业粮食产量的生产和发展有着重大影响。文章根据豫南地区地面观测站实测资料,使用标准化降水蒸散指数SPEI和相关显著性差异分析,进行实证分析并揭示该区域近55年干旱演变规律和同时空条件下农业干旱与冬小麦粮食产量的关系。根据豫南小麦生长周期研究产量与干旱气候的关系,有利于帮助农业劳动人员提高防旱意识,提高抗灾防灾能力,增进粮食产量,保证国泰民生。

With the frequent occurrence of extreme climate and the warming of the atmosphere, climate drought has a significant impact on the production and development of agricultural grain production. Based on the measured data of ground observation stations in the south of Henan Province, the standardized precipitation evapotranspiration index （SPEI） and the correlation significant difference analysis are used in this paper. The relationship between agricultural drought and grain yield of winter wheat under simultaneous air condition and drought evolution law in recent 55 years in this region was analyzed empirically. The study on the relationship between yield and arid climate based on the wheat growth cycle in the Southern Henan is helpful for agricultural workers to improve their awareness of drought prevention, improve their ability to resist and prevent disasters, increase grain yield and ensure the people＇s livelihood.