Preparation and application of macadimia nut branch and leaf carbon matrix fertilizer

The invention discloses preparation and application of a macadamia nut branch and leaf charcoal matrix fertilizer, and relates to the technical field of charcoal matrix fertilizers, the macadamia nut branch and leaf charcoal matrix fertilizer is prepared from the following raw materials by mass: 10-20 parts of a macadamia nut branch and leaf charcoal matrix, 2-5 parts of a chelating agent, 5-15 parts of a nitrogen fertilizer, 5-15 parts of a phosphate fertilizer, 5-15 parts of a potassium fertilizer, and 15-30 parts of akadama soil. The preparation method of the macadamia nut branch and leaf charcoal matrix comprises the following steps: preparing a zinc nitrate solution, uniformly mixing the zinc nitrate solution with an activating agent, pouring the mixture into a reaction kettle, introducing carbon dioxide for reaction, putting the obtained slurry and macadamia nut branch and leaf charcoal into a burning furnace, and reacting for 1-3 hours at the temperature of 1000-1200 DEG C under the protection of inert