Biochar: how to make it into granular fertilizer? The use of biochar as soil improver and climate change mitigation strategy has gained much attention . The amount of agricultural and forestry waste generated each year is huge, and the total volume still maintains a growing trend. At present, the mainstream treatment method is to dispose of it or directly stack it for incineration, which not only wastes resources but also pollutes the environment. Therefore, the use of agricultural and forestry waste has gradually become a hot issue, and it is imperative to find new ways to use this valuable resource efficiently. On the other hand, the huge role played by fertilizers in crop growth and yield increase is self-evident. D ata shows that fertilizer use is increasing year by year. The release of nutrients from common fertilizers is fast, and a large number of nutrients are easily lost, the utilization rate is not high, and environmental damage is caused. Therefore, i...