摘要
作物需水量ETc的计算方法有直接计算法及计算参考作物需水量ET0两种方法,文章分析了各方法应考虑因素、适用条件及优缺点。重点通过对ET0计算公式研究进展的总结,对有代表性的ET0的综合性计算公式:修正彭曼(MP)公式、彭曼-蒙特斯(PM)公式及标准ASCE-PM公式进行对比分析。
There are two ETc computation methods,one is the direct calculation method,and the other is the indirect calculation of the reference crop water requirement.This article analyzes the factors that should be considered,the applicable conditions,and the advantages and disadvantages of each method.This article,through summarizing the progresses in the evapotranspiration(ET0)methods research,analyzes representative ET0 computation methods emphasized on three periods of the world:Modificative Penman(MP),PenmanMonteith(PM)and standard ASCE PM.
作者
吕灿翔
石佳
刘晨辉
LV Canxiang;SHI Jia;LIU Chenhui(Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute,Wuhan 430064,China;Hubei Water Resources Research Institute,Wuhan 430070,China;Hubei Provincial Water Saving Research Center,Wuhan 430070,China)
关键词
计算方法
作物需水量
ET0
普适性
computation methods
Crop Water Requirement
ET0
Universality Conditions
