摘要
研究了甘肃黑河地区麦田土壤水分的变化动态。对春小麦不同部位叶片及不同土壤水分的叶水势、气孔导度和蒸腾强度的日变化规律进行了观测和分析。对春小麦叶鞘、叶片和茎水势的变化情况进行了比较。分析了土壤水分对叶水势、气孔导度和蒸腾强度的影响。建立了相对应的函数关系。
The laws of soil moisture variations on the state of evapotranspiration in Heihe areas has studied. It has made observations and analyses on diurnal variations of the water potential, stomatal resistance and transpiration rate of spring wheat under various soil moisture conditions and different leaf positions. Comparison of the water potentials of leaf, sheath and culm has done. The relationships of soil moisture with leaf water potential and stomatal resistance as well as the effects of soil moisture on them have also been analyzed and the relationships have been expressed by empirical equations.
出处
《高原气象》
CSCD
北大核心
2000年第3期385-390,共6页
Plateau Meteorology
基金
国家自然科学基金重大项目"HEIFE"研究成果
关键词
春小麦
土壤水分
叶水势
甘肃
黑河地区
Spring wheat Soil moisture leaf water potential Transpiration intensity Diurnal variation
