| Previous studies on water infiltration into soil under a point-source dealt mainly with a continuous irrigation. Experiments about water infiltration into soil from intermittent-administration by surface point source were studied in the laboratory. The results showed that the relationship of horizontal and vertical wetting front with infiltration time was remarkable power function. Compared with continuous water adminstration, intermittent water adminstration showed a obvious advantage in reducing water infiltration in horizon(15%) while still not significantly affecting horizontal distribution. When the same total amount of water was used, it was found that the three intermittent cycles (30 min, 60 min, 120 min) did not affect horizontal and vertical wetting fronts. |