摘要
对水分胁迫下农田土壤水分蒸散模型进行了研究,在水分胁迫下实际蒸散量(ET)与潜在蒸散量(ETm)之间关系为:ET=K_W·ET_M,K_W与根层土壤有效水含量具有直线相关性.模型中考虑根系分布的影响,能明显提高模型精度.
A model of soil water evapotranspiration in farmland under the condition of water stress has been established. In the condition of water stress, the relationship between actual evapotranspiration capacity (ET) and potential evapotranspiration capacity (ETm) is ET = Kw·ETm There is a linear correlation between Kw and the content of availabel water in root region. The accuracy of modelling can be improved by introducing the effect of root distribution into the model.
出处
《华北农学报》
CSCD
北大核心
1993年第4期26-30,共5页
Acta Agriculturae Boreali-Sinica
关键词
模型
土壤
水蒸散
水分胁迫
Model
Soil water evapotranspiration
Water stress
