冬小麦拔节期冠层气象条件与晚霜冻害关系研究  

Study on the Cooling Law of Canopy Temperature During the Late Frost Damage Period of Winter Wheat

作　　者：程婉莹 王春艳[2] 李茂松[2] 马娇丽 CHENG Wanying;WANG Chunyan;LI Maosong;MA Jiaoli(Guizhou Vocational College of Agriculture,Guiyang 551400,China;Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]贵州农业职业学院,贵阳551400 [2]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《耕作与栽培》2023年第1期46-51,共6页Tillage and Cultivation

基　　金：“十二五”国家科技支撑计划项目(2012 BAD 20 B 00)资助。

摘　　要：通过监测河南省商丘市冬小麦拔节末期-孕穗期农田近地面6个不同高度上的空气温度,分析这一时期近地面日最低气温的变化规律,以及晚霜冻害发生时降温过程不同高度的气温降温规律。结果表明,降温过程时日最低气温不同高度的温度呈对数递减趋势;降温过程中不同高度的降温速率不同,农田中最低温度出现在冠层高度处,冠层以下,高度越高,温度越低,降温速率越快;不同高度气温与土壤温度、土壤水分相关性不显著。By monitoring the air temperature at six different heights near the surface of farmland during the late jointing and booting stages of winter wheat in Shangqiu City,He’nan Province,the variation pattern of daily minimum temperature near the surface and the temperature reduction pattern at different heights during the cooling process during the occurrence of late frost damage were analyzed.The results show that:during the cooling process,the daily minimum temperature at different heights showed a logarithmic decreasing trend.The cooling rate varies at different heights during the cooling process.The lowest temperature in farmland occurs at the height of the canopy,below which the higher the height,the lower the temperature,and the faster the cooling rate.The correlation between temperature at different heights and soil temperature and soil moisture was not significant.

关 键 词：冬小麦 晚霜冻害 小气候 

分 类 号：S512.1[农业科学—作物学]