Estimation of infiltration parameters for border irrigation based on SIRMOD method and modelling of border irrigation

Infiltration parameter is one of the most important indexes in both irrigation schedule design and irrigation efficiency evaluation for surface irrigation. Most methods used currently to estimate the parameters have the disadvantages in low efficiency and precision. SIRMOD method was employed to estimate the infiltration parameters for border irrigation under the condition of wheat planting. The results showed that the errors of the infiltration rates were less than 2.0% calculated by Maheshwari and SIRMOD methods, respectively. Multi-irrigation alternatives were modeled by SIRMOD and the optimum irrigation quota and irrigation flow with high irrigation efficiency different water deficient conditions. The field experiments were carried out using the modeled results. The observed data from the field experiments verified the agreement with the modeled results.