基于灌水资料推求沟灌土壤入渗参数和糙率的方法研究  

Methods of Deriving Soil Infiltration Parameters and Manning Roughness Based on Data under Furrow Irrigation

作　　者：金建新[1] 张新民[1,2] 单鱼洋 丁林[3] 王文娟[1] 徐宝山[1] 寇红娟 

机构地区：[1]甘肃农业大学工学院,兰州730070 [2]甘肃省水土保持科学研究所,兰州730020 [3]甘肃省水利科学研究院,兰州730000 [4]甘肃农业大学外语学院,兰州730070

出　　处：《灌溉排水学报》2015年第3期48-51,共4页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(51169002)

摘　　要：以水量平衡原理为依据,提出利用灌水资料计算沟灌过程土壤入渗参数以及田面糙率的一般方法。该方法只需2组灌水推进过程资料,避免了大量的水深测量工作;根据所求得的沟灌入渗参数和糙率利用WinSRFR软件模拟水流推进过程,其模拟值与实测值相比精度较高。Based on the principle of water amount balance,the general methods of calculating soil infiltration parameters and the surface Manning roughness were put forward in the process of furrow irrigation using the irrigation data;The infiltration parameters and Manning roughness could be derived from only two sets of data in water propulsion process using the proposed methods,which could avoid a chain of repetitive water depth measurement.The simulated water propulsion process by WinSRFR software according to the derived soil infiltration parameters and manning roughness agreed well with the measured data.

关 键 词：沟灌 入渗参数 糙率 灌水资料 

分 类 号：S274[农业科学—农业水土工程]