Phosphorus-rich biomass pyrolytic carbon capable of controllably releasing available phosphorus and preparation method and application thereof

The invention discloses phosphorus-rich biomass pyrolytic carbon capable of controllably releasing available phosphorus and a preparation method and an application thereof. The method comprises the following steps: (1) drying and crushing phosphorus-rich biomass shrimp shells to obtain shrimp shell powder; and (2) heating the shrimp shell powder obtained in the step (1) to 200-850 DEG C in a protective gas atmosphere, carrying out heat preservation for 2 hours for carbonization, cooling the shrimp shell to room temperature, sieving the product and collecting the particles less than 600 [mu]m in size, thereby obtaining the phosphorus-rich biomass pyrolytic carbon capable of controllably releasing available phosphorus. The phosphorus-rich biomass pyrolytic carbon can effectively promote thecontrolled release of available phosphorus without ultramicro particles, and reduces the power consumption required for preparing high-temperature pyrolytic biomass carbon and the economic cost for grinding the ultramicro par