Research Progress of the Improved Saline-Alkaline Soil by Biochar

Biochar is a product for the recycling and utilization of solid waste from agriculture and forestry, and has more voids and larger specific surface area, and is widely used for improving saline-alkaline soil. Saline-alkaline soil is a key factor limiting crop growth. The research of changes in the environment of saline-alkaline soil caused by biochar application are of great significance for the sustainable utilization of saline-alkaline soil. This article summarizes the research progress on the improvement of saline-alkaline soil by biochar, and proposes future research priorities for the improvement of saline-alkaline soil by biochar. The research results provide data support and scientific basis for future research on the impact of biochar improvement on saline-alkaline soil on CH 4 uptake, and emissions of CO 2 and N 2 O.