蓄水坑灌下苹果树冠层导度日变化及影响因子研究  

Study on the Diurnal Variation of Canopy Conductance of Apple Trees Under Water Storage Pit Irrigation and Its Influencing Factors

作　　者：赵文渊 孙西欢[1,2] 马娟娟[1] 郭向红[1] 孟玮[1] 马文云 张威贤 ZHAO Wen-yuan;SUN Xi-huan;MA Juan-juan;GUO Xiang-hong;MENG Wei;MA Wen-yun;ZHANG Wei-xian(College of Water Resource and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Jinzhong College, Jinzhong 030600, Shanxi Province, China)

机构地区：[1]太原理工大学水利科学与工程学院,太原030024 [2]晋中学院,山西晋中030600

出　　处：《节水灌溉》2020年第9期64-68,74,共6页Water Saving Irrigation

基　　金：国家自然科学基金(51579168);山西省自然科学基金(201601DO11053)。

摘　　要：为探究蓄水坑灌条件下苹果树冠层导度的日变化规律,使用茎流计法计算冠层导度,运用方差分析、相关分析、回归分析对蓄水坑灌和地面灌溉不同处理下苹果树冠层导度的日变化特征及对气象因子(空气温度、太阳辐射、空气相对湿度、风速)的响应进行了研究。结果表明:不同处理苹果树冠层导度均为单峰曲线,峰值出现在上午10∶00到11∶00左右;灌水上下限越高,冠层导度越大;相同灌水条件下,蓄水坑灌处理苹果树冠层导度高于地面灌溉处理;空气温度、太阳辐射、风速与冠层导度呈正相关关系,相对湿度与冠层导度呈负相关关系,各气象因子对冠层导度影响显著,均达到显著以上水平。In order to explore the diurnal variation law of the canopy conductance of apple trees under the condition of water storage pit irrigation,stem flow meter method was used to calculate the canopy conductance,and variance analysis,correlation analysis and regression analysis were used to study the diurnal variation characteristics of the canopy conductance of apple trees under different treatments of water storage pit irrigation and ground irrigation,as well as the response of meteorological factors(air temperature,solar radiation,relative humidity and wind speed).The results showed that the canopy conductance of apple trees in different treatments was single peak curve,and the peak value appeared from 10∶00 to 11∶00 in the morning;the higher the upper and lower limits of irrigation,the greater the canopy conductance;under the same irrigation conditions,the canopy conductance of apple trees in water storage pit irrigation treatment was higher than that in surface irrigation treatment;the air temperature,solar radiation,wind speed and canopy conductance were positively correlated,and the relative humidity and canopy conductance were negatively correlated.Each meteorological factor has a significant impact on canopy conductance,all of which are above the significant level.

关 键 词：蓄水坑灌 冠层导度 日变化 苹果 

分 类 号：S275.9[农业科学—农业水土工程]