入沟流量对灌水质量和水流特性的研究  

The Inflow Discharge of Furrow Study on Irrigation Quality and Flow Characteristics

作　　者：胡昊[1] 李欢欢[1] 汪顺生[1] 王兴 史尚 HU Hao LI Huan-huan WANG Shun-sheng WANG Xing SHI Shang(North China University of Water Resources and Electric Power,Zhengzhou 450045, China Irrigation and Drainage Development Center of Jiangxi Province,Nanchang 330013, China)

机构地区：[1]华北水利水电大学,郑州450045 [2]江西省灌溉排水发展中心,南昌330013

出　　处：《节水灌溉》2016年第10期47-50,54,共5页Water Saving Irrigation

基　　金：国家自然科学基金项目(51279157);国家科技支撑计划项目(2007BAD88B02)

摘　　要：通过垄作沟灌的田间灌水试验,用极差分析研究入沟流量、沟宽、沟深、沟底纵坡4个技术参数对灌水质量的影响和研究入沟流量对地面水流特性的影响。研究表明:入沟流量对灌水质量影响最大,其次为沟底纵坡、沟深和沟宽;水流推进时间随着入沟流量的增大逐渐减少,推进速度逐渐加快,水流推进距离与水流推进时间呈幂函数关系,相关程度都大于0.99;水流消退时间随入沟流量的增大逐渐增大,消退速度逐渐减小,尽管水流消退时间与距离也呈幂函数关系,但二者的相关性没有推进过程的好。研究成果对我国入沟流量的相关研究具有一定的参考价值。Through field irrigation experiment based on ridge planting and ditch irrigation, this paper research inflow discharge of fur row, furrow width, depth, bottom longitudinal grade four technical parameters on the quality of the water and study on the influence of inflow discharge of furrow on the flow characteristics of the ground by range analysis. The research results showed that the flow into the ditch had the greatest influence on water quality, followed by bottom longitudinal slope, groove depth and groove width; Water flow advance time gradually reduce with the increase of flow into the ditch, water flow advance speed gradually accelerated, and water flow advance distance and time is a power function relationship, the degree of correlation is greater than 0. 99; Water fade time is gradually increasing with the increase of into the ditch flow, Water fade speed is gradually decreasing, Although water fade time and distance is also a power function relationship, but the correlation is not better than the water flow advance process. The re- search results has a certain reference value about China＇s related research on flux into the ditch.

关 键 词：沟灌 入沟流量 灌水质量 水流特性 

分 类 号：S275.3[农业科学—农业水土工程]