烤烟棵间蒸发变化规律研究  

Measurement of Evaporation from Flue-cured Tobacco Field

作　　者：张和喜[1] 袁友波[2] 舒贤坤[2] 方小宇[1] 房军[1] 

机构地区：[1]贵州省水利科学研究院,贵州贵阳550002 [2]贵州省烟草科学研究所,贵州贵阳550003

出　　处：《河南农业科学》2008年第10期48-50,共3页Journal of Henan Agricultural Sciences

基　　金：贵州省水利厅主要农作物灌溉试验专项资金

摘　　要：采用微型蒸渗仪测定烤烟全生育阶段土面蒸发强度,并对测定结果进行分析,分析结果表明:土面蒸发量随烤烟长势在潜在腾发量中所占比例先增大后变小再增大,并与土壤含水量呈y=0.0351x-0.2381线性关系,与作物叶面积指数呈y=9.3688e-3.107x指数函数关系,这为指导烤烟精确灌溉提供了理论依据。The soil evaporation from flue-cured tobacco field was measured by means of microlysimeter. The result indicated that the ratio between soil evaporation and crop evapotranspiration was increases first and then become smaller and increases again during the growing season . The linear relations with the soil moisture content is y= 0. 0351x -0. 238 1. And the exponential function relations with the crops fear area index is y= 9. 368 8e^-3.107x, The result of this study is meaningful for the tobacco precise irrigation.

关 键 词：微型蒸渗仪 土面蒸发 烤烟 叶面积指数 土壤含水量 

分 类 号：S572[农业科学—烟草工业]