According to the research results for the interacting depth of rainfallrunoffsoil solute at home and abroad,the various methods for calculation of the interacting depth were compared based on the experimental data in laboratory.

The physical processes of soil solute transfer with runoff and their features were analyzed based on the summation of research results at home and abroad.

Under certain soil texture, bulk density and water content of soil, moving time and distance of soil solute were regarded as the main parameters on soil solute transport.

Nutrient migration and soil salinisation are the two major concerns in the research of soil solute transport.

Based on the review of national and international research results of soil solute transport and saline water use, both theoretical analysis and laboratory experiments were conducted to study infiltration of water and solute transport in layered soils, automatic measurement of soil water and solute transport parameters , and safe use of slightly saline water.