干旱地区农业研究Issue(4)：251-258,267,9.DOI:10.7606/j.issn.1000-7601.2015.04.38
华北平原夏玉米各生育阶段农业气候要素变化特征
Analyses of variations in agro-climatic elements during summer maize growing season in North China Plain
摘要
Abstract
Based on phenological data of summer maize at from typical agro-meteorological experimental stations and parallel daily meteorological data from 48 meteorological stations in the North China Plain (NCP ) from 1981 to 2009 ,we analyzed the variations of agro-climatic elements during summer maize growing season in recent 30 years by using the method of liner regression .The results showed that mean temperature ,mean maximum temperature and mean minimum temperature during the period from emergence to jointing were increased by 0 .42℃·10a-1 ,0 .36℃·10a-1 and 0 .58℃·10a-1 ( P<0 .05 ) ,respectively .There were more stations where mean minimal temperature became increased statisti-cally significantly than those where mean maximum temperature was increased significantly .Mean daily temperature range became decreased by 0 .22℃·10a-1 ( P<0 .05) during the period from emergence to jointing .There was no significant changing trend in the temperature during the period from jointing to tasseling .However ,mean daily temperature range was decreased by 0 .22℃·10a-1 ( P<0 .05) from jointing to tasseling .Mean temperature ,mean maximum temperature and mean minimum temperature during the period from tasseling to maturity were decreased by 0 .16℃·10a-1 ( P<0 .05) ,0 .15℃·10a-1 ( P<0 .05) and 0 .06℃·10a-1 ,respectively .The stations where the temperature became de-creased significantly in statistics were located in Shandong province .Also ,precipitation was changed little during all the development stages of summer maize ,except for the south area of Shandong and the middle regions of Henan where pre-cipitation during the period from the emergence to jointing had been increased significantly .Additionally ,mean daily ra-diation was decreased by 0 .83 MJ·m-2·10a-1 ,1 .10 MJ·m-2·10a-1 ,0 .87 MJ·m-2·10a-1 and 0 .89 MJ·m-2· 10a-1 ( P<0 .05 ) ,respectively ,during the periods from emergence to jointing ,from jointing to tasseling ,from tasseling to maturity and from sowing to maturity .The results are helpful to refine the agricultural measures in summer maize pro-duction in NCP .关键词
华北平原/夏玉米/生育期/气候变化Key words
North China Plain/Summer maize/Growing period/Climatic change分类
农业科技引用本文复制引用
胡洵,王靖..华北平原夏玉米各生育阶段农业气候要素变化特征[J].干旱地区农业研究,2015,(4):251-258,267,9.基金项目
中国气象局／河南省农业气象保障与应用技术重点开放实验室开放研究基金项目（MF201203）；国家自然科学基金项目（41101046）；973项目 （）
