Based on the infiltration experiments of grassland and bare plots under freezing and thawing condition

the infiltration characteristics of the grassland plots and bare plots were analyzed.Results show that the temperature in grassland is higher than that in bare plot from 0 to 40cm depth

but the soil moisture is lower than that in bare plot during seasonal freezing and thawing period.In initial freezing and thawing stage

the 90 min cumulative infiltration amount of grassland plot is higher than that of bare plot

but the infiltration intensity of grassland plot is lower than that of bare plot.The infiltration characteristics of grassland plots are almost same with bare plots during the steady freezing stage.The research results will provide a basis for further study on infiltration characteristics of grassland under seasonal freezing and thawing condition

and also can be taken as a reference for the conservation of soil and water

ecology renovation and irrigation engineering in winter and spring in seasonal freezing and thawing region.