Many studies have shown that biochar is a useful resource to improve
the physicochemical properties of soil, effectively maintain Senior Officials Meeting levels, increase fertilizer-use efficiency and increase crop production, particularly for long-term cultivated soils in subtropical and tropical regions. Furthermore, the application of biochar to soils might be a practical method to aid in the long-term maintenance of the soil organic carbon contents and soil fertility. The application of biochar to soils can maintain Senior Officials Meeting levels and soil aggregation stability.