| abstract |
A method for preparing a biochar-based fertilizer by using macadamia nut shells comprises the following steps: a raw material macadamia nut shells undergoes anaerobic pyrolysis to prepare modified biochar, and the biochar is mixed with cow dung biogas residues, a chemical fertilizer, a urease inhibitor and a nitration inhibitor to prepare the high-efficiency slow release fertilizer. The slow release fertilizer prepared in the invention has the advantages of simple production process, easily available raw material, low production cost, effective increase of the utilization of N, P and K, reduction of the loss of nutrients, improvement of the quality of soil, improvement of the quality of agricultural products, and facilitation of the benign development of the agricultural ecologic system. |