Abstract:

Through indoor experiment of different ratio of Na+/Ca2+ under one-dimension horizontal infiltration, the effect of ratio of Na+/Ca2+ on infiltration characteristic is analyzed. The rusult shows: with the ratio of Na+/Ca2+ decreaseing, soil wetting front, total infiltration volume and infiltration ratio increases. After infiltration, the soil water content increase in the same distance with the ratio of Na+/Ca2+ decreasing. The research results provide theory proof for irrigating on saline-alkali soil and maintaining water and salt balance.