供水压力对节点渗灌管出水孔工作压力影响的研究  

Study on Influence of Water Supply Pressure on Outlet Pressure of Node Permeation Irrigation Pipe

作　　者：任秉枢[1] 张玉龙[1] 张倩[1] 邸博[1] 袁德玲[1] 唐首锋[1] 王丽娜[1] 

机构地区：[1]沈阳农业大学土地与环境学院、农业部东北土壤与环境重点开放实验室,辽宁沈阳110161

出　　处：《节水灌溉》2009年第2期14-16,共3页Water Saving Irrigation

基　　金：辽宁省农业节水关键技术集成与示范项目(20080112-311);辽宁省教育厅创新团队资助项目(2007T156)

摘　　要：用土槽模拟试验的方法,对渗灌灌水时供水压力与节点渗灌管出水孔的水压关系进行了试验研究,结果表明:水源供水压力越大,水头损失越大,水头对渗灌管出水均匀效果产生影响,节点式渗灌灌水时供水压力以100cm水柱左右为宜。The relation between water supply pressure and outlet pressure of node permeation irrigation pipe is studied through the soil bin simulation test. The results indicates that bigger is the water supply pressure of water source, bigger is the head loss, and the water head has an affect on uniformity coefficient of output of node permeation irrigation pipe. The appropriate water supply pressure is lOOcm water column for node permeation irrigation.

关 键 词：节点渗灌 供水压力 水头损失 

分 类 号：S152.7[农业科学—土壤学]