Research and analysis system for phosphorus release in insoluble charcoal-based phosphate fertilizer

The invention belongs to the field of phosphorus release research, and particularly relates to a phosphorus release research and analysis system in an insoluble charcoal-based phosphate fertilizer (NBPF). According to the invention, the insoluble charcoal-based phosphate fertilizer with relatively high content of precipitated phosphorus and organic phosphorus is prepared by regulating and controlling CS, K3PO4 and MgO. The content of precipitated phosphorus in the phosphate fertilizer reaches 26.42 mg/g, and the content of organic phosphorus reaches 9.72 mg/g. Precipitated phosphorus is loaded on the surface of biochar in the form of small particles, so that the surface of NBPF is rough, and abundant sites are provided for attachment of Rs-198. The aromatization degree of the NBPF is low, and the free radical content is low, so that the colonization speed of Rs-198 on the surface of the NBPF is increased. The Rs-19 not only adsorbs phosphorus in a mineral medium by secreted exopolysaccharide (EPS), but also a