农业工程学报2009，Vol.25Issue(2)：1-5,5.
水头压力对橡塑渗灌管渗水性能的影响
Effects of operating pressure on the discharge characteristics of porous pipes as micro-irrigation laterals
摘要
Abstract
A laboratory study was conducted to investigate the effect of operating pressure on the discharge characteristics of porous pipe as micro-irrigation laterals with different specifications. Experimental results showed that emission rates for both pipes decreased drastically during the initial test stage. Exponential relationship between emission rate and operating pressure was observed within the testing pressure range of0～70 kPa. Minimum emission rate variation coefficients were reached for both pipes within the operating pressure range of 50～60 kPa. It can be concluded that operating pressure has significant effects on emission rate and emission uniformity of porous pipe. In general, the larger diameter pipe shows better discharge characteristics than the smaller one.关键词
渗灌管/微灌/渗水性能/渗水均匀性Key words
porous pipe/micro-irrigation/discharge characteristics/emission uniformity分类
农业科技引用本文复制引用
梁海军,刘作新,舒乔生,尹光华..水头压力对橡塑渗灌管渗水性能的影响[J].农业工程学报,2009,25(2):1-5,5.基金项目
Open Research Fund of Key Laboratory of Liooning Water Saving Agriculture (No.05KJT21002) （No.05KJT21002）
National Key Technology R&D Program for the llth Five-year Plan-Research and Demonstration of Spring Maize High-yield Technology Integrafion in East of Northeast Plain(Liaoning Province)(No.2006BAD02A12) （Liaoning Province）
