地下渗灌土壤水分运动数值模拟  

Numerical simulation of soil water movement under infiltration irrigation

作　　者：梁海军[1] 刘作新[2] 王振营[2] 舒乔生[2] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]中国科学院沈阳应用生态研究所,辽宁省节水农业重点实验室,沈阳110016

出　　处：《农业工程学报》2008年第10期11-14,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：辽宁省节水农业重点实验室开放基金项目(No.05KJT21002);“十一五”国家科技支撑计划项目(No.2006BAD02A12)

摘　　要：为了寻找一种准确实用的土壤水分运动模拟方法用于指导田间渗灌,该文对一种橡塑渗灌管田间渗灌过程进行监测,并采用Green-Ampt积水入渗模型和一维水平吸渗模型Philip解法分别对渗灌过程中土壤水分在垂直和水平方向的运动进行模拟,通过与田间实测值对比,检验模型的适用性。结果表明,应用Green-Ampt积水入渗模型模拟田间渗灌过程垂直方向土壤水分运动具有较好的准确性,一维水平吸渗模型Philip解法在水平方向的模拟则存在一定偏差。In order to find out an accurate and practical soil water movement simulation method for infiltration irrigation management, in this paper, investigations of field subirrigation using a rubber-based porous pipe were carried out, and Green-Ampt Model and Philip Method for solving one-dimensional Richard Equation were used respectively to simulate the soil water movement in perpendicular and horizontal directions. By comparing the modeling with the on-the-spot survey results, the simulations were estimated. The research results indicate that Green-Ampt Model shows a high accuracy in perpendicular simulation, but in horizontal direction obvious differences between simulation results and field measurement values exist.

关 键 词：GREEN-AMPT模型 渗灌 土壤水分运动 数值模拟 

分 类 号：S654.234[农业科学—果树学]