论文部分内容阅读
本文介绍采用彭曼(H.L.Penman)公式计算蒸发力的方法及应用和推导.该公式物理意义明确,有较严密的理论依据.它是以能量平衡和空气动力学原理为基础的多因子公式.用它计算的水面最大可能蒸发量乘以一定系数,便可换算成农田蒸散量.它是一个建立在生物学和物理学理论基础上,综合地考虑各影响因子的方法.应用时需结合当地情况予以修正.
This paper introduces the method and its application and derivation of calculating evaporation force by using the formula of Penguin (HLPenman) .The formula has a clear physical meaning and a rigorous theoretical basis.It is a multi-factor formula based on energy balance and aerodynamics. Using it to calculate the maximum possible evaporation of water multiplied by a certain coefficient, can be converted into farmland evapotranspiration.It is based on biological and physical theory, it is a comprehensive consideration of the impact of various factors.Application of local The situation is amended.