冬小麦晚霜冻害冠层气象因素相关关系研究  

Study on the Correlation Between Meteorological Factors of Late Frost Damage in Winter Wheat Canopy

作　　者：程婉莹 王春艳[2] 马娇丽 CHENG Wanying;WANG Chunyan;MA Jiaoli(Guizhou Vocational college of Agricultural,Guiyang Guizhou 551400,China;Institute of Agricultural Resources and Regional Planning,CAAS.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3期28-34,38,共8页Tillage and Cultivation

基　　金：“十二五”国家科技支撑计划项目(2012BAD20B00)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0~40 cm不同高度上的农田气象要素,分析这一时期近地面日最低气温和日最低叶温的变化规律,以及各气象要素对这两项指标的影响和二者之间的关系。结果表明,降温过程中日最低气温不同高度的温度呈对数递减趋势,日最低叶温不同高度的温度呈线性递减规律;不同高度上日最低气温变化受5 cm处空气湿度的影响;不同高度的日最低叶温受5 cm、10 cm处空气温度和所在高度的日最低温影响;叶气温差受0~10 cm日最低气温、0~10 cm土壤温度、20 cm以下深度土壤水分以及所在层次的日最低气温的综合影响。Through monitoring the farmland meteorological elements at different heights of 0-40 cm near the ground from the late jointing stage to the booting stage of winter wheat in Shangqiu City,Henan Province,the change law of the daily minimum temperature near the ground and the daily minimum leaf temperature during this period was analyzed,as well as the impact of various meteorological elements on these two indicators and the relationship between them.The results show that:During the cooling process,the temperature at different heights of the daily minimum temperature shows a logarithmic decreasing trend,while the temperature at different heights of the daily minimum leaf temperature shows a linear decreasing trend;The variation of daily minimum temperature at different heights was influenced by air humidity at 5 cm;The daily minimum leaf temperature at different heights was influenced by the air temperature at 5 cm and 10 cm,as well as the daily minimum temperature at the corresponding height;The temperature difference between leaves and air is comprehensively affected by the daily minimum temperature of 0-10 cm,soil temperature of 0-10 cm,soil moisture below 20 cm depth,and the daily minimum temperature at the corresponding level.

关 键 词：冬小麦 晚霜冻害 近地面农田小气候 

分 类 号：S512.1[农业科学—作物学]