Effect of Acid Modified Biochar on Infiltration Characteristics of Coastal Saline Soil
To study the effects of conventional biochar and acid modified biochar on water infiltration,with no biochar as the control(CK),2 kinds of biochar with 3 additive amounts of 2％,4％and 8％(mass fraction)were set up to conduct vertical one-dimensional water infiltration test.The dynamic changes of cumulative infiltration amount and wetting front migration were measured and discussed.The results showed that biochar increased the cumulative infiltration volume,shortened the wetting front transport time and improved the infiltration rate,and the larger the amount of biochar added,the more obvious the effect.Biochar improved the water holding capacity of coastal saline soils,and the effect of acid modified biochar on increasing the water content of shallow soil was more obvious.The one dimensional algebraic model was suitable for the water content of the tillage layer of coastal saline soil after the addition of biochar,and simulated the water distribution of the soil tillage layer after the infiltration test.Overall,the addition of 4％acid modified biochar was beneficial for improving the infiltration capacity and water holding characteristics of coastal saline soils.
biocharacid modifiied biocharsaline soilsoil infiltrationone dimensional algebraic model
万方数据
维普
