Soil wetting characteristics under intermittent infiltration of fertilizer solution were analyzed based on indoor experimental data to study the intermittent infiltration characteristics under surge fertigation.The results indicated that wetting front under intermittent infiltration of the fertilizer solution moved slower than under continuous infiltration and the speed decreased with cycle number.Piecewise model for calculating transport distance of the wetting front under intermittent infiltration of fertilizer solution was analyzed

and the simple model based on continuous infiltration data of fertilizer solution was suggested

the example calculation indicates that the method is simple and effective.Soil water content under intermittent infiltration of fertilizer solution is more evenly distributed than continuous infiltration and the proportion of infiltration quantity increased at the same wetting depth.