Abstract:In order to design properly a low pressure irrigation system for water sabing and to study the seep-irrigation characterization under gravitational force in greenhouse,a simulated test is conducted to study the infiltration rate of seepage-pipe and infiltration characterization of soil moisture by controlling the initial soil moisture,soil compaction,hydraulic height and depth of seepage-pipe under gravitational force.The test results show that infiltration capacity of the seepage-pipe varies with time in power-law,and the infiltration rate varies cubically with time.After irrigation,the area of wetting and soil moisture are influenced by hydraulic height,initial soil moisture,soil unit weight and depth of seepage-pipe in different degrees.The effects of 4 factors on infiltration rate are in descending order as hydraulic height,initial soil moisture,soil unit weight and depth of seepage-pipe.The interactions of hydraulic height,initial soil moisture and soil unit weight influence significantly on infiltration rate too.
袁巧霞;蔡月秋. 低压重力渗灌系统渗灌的特性[J]. 排灌机械工程学报, 2007, 25(4): 38-42.
YUAN Qiao-xia, CAI Yue-qiu. Study on seep-irrigation characterization of irrigation system under gravitional force. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 38-42.