[Mathematical simulation of point source average infiltration depth under film hole irrigation].
By using RETC and SWMS-3D software, the point source infiltration characteristics of several typical soils under film hole irrigation were simulated, with the infiltration characteristics and related affecting factors analyzed. One simplified point source infiltration model with the parameters opening film hole rate, film hole diameter, soil clay particle content, and soil bulk density was established, and tested by infiltration experiments with the typical soils from Loess Plateau. It was shown that the infiltration coefficient under film hole irrigation increased with increasing opening film hole rate and decreased with increasing film hole diameter and soil clay particle content, while the infiltration index decreased with increasing opening film hole rate and soil clay particle content. This model could simply and accurately reflect the point source infiltration characteristics under film hole irrigation, and credibly determine the infiltration coefficient and index.
Sun
Xiu-Juan
XJ
Ministry of Education key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Northwest A & F University, Yangling 712100, Shaanxi, China. sunxiujuan821128@163.com
Ma
Xiao-Yi
XY
Liu
Ji-Long
JL
Zhan
Guo-Long
GL
D057914:Agricultural Irrigation; D000383:Agriculture / Q000379:methods*; D003198:Computer Simulation; D018556:Crops, Agricultural / Q000254:growth & development*; D008962:Models, Theoretical; D014867:Water / Q000032:analysis*; D014872:Water Movements
D014867:Water