中国农业气象 ›› 2013, Vol. 34 ›› Issue (03): 317-323.doi: 10.3969/j.issn.1000-6362.2013.03.011

• 论文 • 上一篇    下一篇

华北平原冬小麦各生育阶段农业气候要素变化特征分析

胡洵瑀1,2,3,王靖1,冯利平1   

  1. 1中国农业大学资源与环境学院系统模拟与软件技术实验室,北京100193;2中国科学院植物研究所植被与环境变化国家重点实验室,北京100093;3中国科学院大学,北京100049
  • 收稿日期:2012-09-25 出版日期:2013-06-20 发布日期:2013-06-17
  • 作者简介:胡洵瑀(1989-),女,浙江海宁人,研究生,研究方向为气候变化影响与适应。Email:huxunyucooky@163.com
  • 基金资助:
    国家自然科学基金项目(41101046);973项目(2009CB118608)

Analysis on Agroclimatic Elements Variation during Winter Wheat Growing Season in North China Plain

HU Xun yu1,2,3,WANG Jing1,FENG Li ping1   

  1. 1System Modeling & Software Technology Lab,College of Resources and Environmental Sciences,China Agricultural University,Beijing100193,China;2State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,CAS,Beijing100093;3University of Chinese Academy of Science,Beijing100049
  • Received:2012-09-25 Online:2013-06-20 Published:2013-06-17

摘要: 基于华北平原48个气象站1961-2008年平均、平均最高和平均最低气温、降水、日照时数等逐日气象资料,以及6个农业气象试验站的冬小麦生育期资料,采用线性倾向估计的方法,分析华北平原近50a冬小麦各生育阶段农业气候要素的变化趋势,并讨论其对冬小麦生产的可能影响。结果表明,(1)全生育期内平均温度上升0.37℃·10a-1(P<0.05),增温主要集中在越冬-返青、返青-拔节、拔节-开花期,其增幅分别达0.53、0.49和0.39℃·10a-1,显著增温的站点分别达97.9%、75.0%和79.2%。平均最高、最低温度的变化趋势与平均温度相似,平均最低温度的变幅更大,因此冬小麦全生育期气温日较差平均下降0.19℃·10a-1,其中越冬-返青和开花-成熟期下降0.25和0.26℃·10a-1。(2)降水量的变幅无论在冬小麦的全生育期内还是各生育阶段均较小。(3)冬小麦全生育期总辐射量减少54.02MJ·m-2·10a-1,其中播种-越冬、越冬-返青期分别减少15.74、20.09MJ·m-2·10a-1,开花-成熟期减少12.00MJ·m-2·10a-1,辐射量显著减少的站点集中分布在华北平原中部。研究结果对冬小麦的合理布局和农事安排有积极作用。

关键词: 华北平原, 冬小麦, 生育期, 气候变暖

Abstract: The variation of agricultural climatic elements during winter wheat growing season and its impact on wheat production were analyzed and discussed based on daily meteorological data of 48 meteorological stations in the North China Plain (NCP),and crop data from 6 typical agro meteorological observation stations.The results showed that average temperature increased at the rate of 0.37℃·10y-1(P<0.05) during whole growing season,and increased at the rate of 0.53,0.49 and 0.39℃·10y-1 from overwintering to regreening, regreening to jointing and jointing to flowering respectively.97.9%, 75.0% and 79.2% of stations showed obvious temperature increasing.Average minimumtemperature increased more obvious than average maximum temperature,which caused the decrease in the daily temperature range.Daily temperature range decreased at the rate of 0.19℃·10y-1 during whole growing season,and decreased at the rate of 0.25℃·10y-1 from overwintering to regreening and 0.26℃·10y-1 from flowering to maturity.The precipitation change was not significant during whole growing season and each development stage.The radiation decreased at the rate of 54.02MJ·m-2·10y-1during whole growing season,and decreased at the rate of 15.74,20.09 and 12.00MJ·m-2·10y-1 from sowing to overwintering,overwintering to regreening and flowering to maturity respectively.The radiation decreased significantly in central NCP.The results are helpful to rational distribution of winter wheat and farming management.

Key words: North China Plain, Winter wheat, Growing period, Climate warming