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.
出处
《河南农业科学》
CSCD
北大核心
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
关键词
微型蒸渗仪
土面蒸发
烤烟
叶面积指数
土壤含水量
Micro-lysimeter
Soil evaporation
Flue-cured tobacco
Leaf area index
Soil moisture content
