Study on the infiltration characteristics and mathematical models of fertilizer solution bilaterally flowing into the film hole

Based on the lab experiment,has analyzed the infiltration characteristics and putforward the fourmathematical models for the fertilizer solution bilaterally flowing into the film hole. The reducing infiltration model was set up under the conditions that the free infiltration parameters and the reducing infiltration parameters of fertilizer solution flowing into film hole has been known. The piecewise function model was set up under the conditions that the infiltration model in each stage was total for the power function. The increasing infiltration ratio model was set up under the conditions of increasing infiltration rate thatcompared the fertilizersolutionwith the freshwaterbilaterally flowing into filmhole and the parameters of freshwaterbilaterally flowing into filmhole has been known.The reduction infiltration ratio model was set up under the condition of reducing infiltration rate compared the fertilizer solution single-line infiltrated into film hole with the fertilizer solution free infiltrated into filmhole and the parameters of free infiltrationhas been known.These fourmodels can be supplied rather accurate canculation results through the measured data.