衡水地区冬小麦生长后期需水量变化特征  

The Characteristics of Water Requirement Change during the Later Growth Stage of Winter Wheat in Hengshui

作　　者：于海磊[1,2] 吴息[1] 李珊 贾秋兰 

机构地区：[1]南京信息工程大学大气科学学院,南京210044 [2]衡水市气象局,河北衡水053000 [3]赞皇县气象局,河北赞皇051230 [4]邢台市气象局,河北邢台054000

出　　处：《湖北农业科学》2016年第14期3546-3548,3554,共4页Hubei Agricultural Sciences

基　　金：河北省自然科学基金项目(C2014301026)

摘　　要：利用衡水市3个气象站1965-2012年的逐日气象数据,采用作物需水量模型以及相关统计方法,分析了近48年来衡水地区冬小麦灌浆期至成熟期需水量的变化特征。结果表明,1965-2012年衡水地区冬小麦生长后期需水量呈波动下降的趋势,趋势变化显著,近48年来下降了37.9 mm,人工灌水量的减少趋势快于需水量的变化,近48年来减少了62.4 mm;需水量存在时间序列上的突变现象,突变发生在1976年,1977年以后变化更加明显;在冬小麦后期需水量波动减少的过程中存在明显的7年变化周期;冬小麦后期生长需水量的变化与日照时数呈最大正相关,与相对湿度的变化呈最大负相关。Based on the daily meteorological data of three stations from 1965 to 2012 in Hengshui area, the change characteristics of winter wheat＇s water requirement during filling stage to mature stage in 48 years of Hengshui area was analyzed by using the model of crop water requirement and the related statistical methods. The results showed a significant trend of reduction about the water requirement during the later growth stage of winter wheat from 1965 to 2012 in Hengshui area, it had37.9 mm dropped in the past 48 years,the reduction of artificial irrigation water was more faster, and it had 62.4 mm dropped in the past 48 years. The water requirement existed a jumping phenomenon in the time series of recent 48 years, the time of jumping phenomenon appeared in 1976, and it was more obvious after 1977. In the fluctuating downward process of winter wheat＇s water requirement during the later growth stage, it presented a variational period of 7 years. Sunshine time was the most positive correlation about the change of winter wheat ＇s water requirement during the later growth stage, the relative humidity was the most negative correlation to it.

关 键 词：冬小麦后期生长 作物需水量模型 变化 

分 类 号：S162.8[农业科学—农业气象学] S512.11[农业科学—农业基础科学]