水资源与水工程学报2015，Vol.26Issue(5)：235-240,6.DOI:10.11705/j.issn.1672-643X.2015.05.46
陇中半干旱区地膜开孔率对玉米蒸腾的影响
Impact of film open ratio on transpiration of maize in semi-arid area of Longzhong
摘要
Abstract
In order to know the influence of film open ratio on the transpiration rate of maize ,and the re-lation between water consume of maize transpiration and climate factors so as to provide theory basis for agricultural irrigation and film cultivation technique , the paper used stem flow gauge which is based on heat balance method to continually measure the transpiration rate of maize under different conditions of film open ratio ,and analyzed the data of transpiration and climate .Results showed that the maize transpi-ration respectively presents single peak curve and multi peak curve in sunny days and cloudy days .The transpiration rate of maize decreases with the increase open ratio .The more the open ratio ,the longer of time the transpiration stay at peak value .There is an exponential relationship between transpiration effi-ciency and filmopen ratio .Themain climate factors which affect the transpiration rate of maize are in turn solar radiation >temperature>relative humidity .The film can change the micrometeorology of maize root area to affect its transpiration rate through change air temperature and relative humidity in scope of film .关键词
茎流计/地膜开孔率/玉米蒸腾/半干旱区Key words
stem flow gauge/film open ratio/maize transpiration/emi-arid area分类
农业科技引用本文复制引用
董军,党慧慧,岳宁,董阳,魏国孝..陇中半干旱区地膜开孔率对玉米蒸腾的影响[J].水资源与水工程学报,2015,26(5):235-240,6.基金项目
国家自然科学基金项目(41471023) （41471023）
国家级大学生创新创业训练项目(860496) （860496）
