Simulation and Verification of Two-dimensional Root Water Absorption Model for Surface Tillage with Mulch
Abstract：Water intake ability by root plays the indispensable role in dynamic simulation of soil water movement.Base on soil water dynamics equations,this paper comprehensively estimates root-water-uptake rate by using back calculation method,the same time analysis of corn root profile information,establishment of an effective root density distribution function,combined with the soil profile water content distribution establishment the two-dimensional model of root water absorption for surface tillage with mulch.Consequently,the applicability of the root water absorption model on soil moisture dynamic change was verified with the data of experiments.The results showed that the average relative error between simulated and observed values was 7.11% to 3.75%,and the method is reasonable and feasible which can satisfy the precision in soil moisture dynamic simulation.
Keywords：surface tillage with mulchtwo-dimensionalroot water absorption modelnumerical simulation
Publication Date：2011-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)