Torreya Grandis-Specific Organic Fertilizer and Preparation Method Thereof

The present invention discloses a Torreya grandis-specific organic fertilizer. The organic fertilizer includes the following raw materials, in parts by weight: 30 to 50 parts of peat, 3 to 10 parts of the cake of camellia oleifera seed, 8 to 15 parts of peanut stem, 3 to 8 parts of potassium fulvate, and 1 to 3 parts of biological matrix composite. The biological matrix composite includes Aspergillus niger, Candida tropicalis and thermostable Bacillus subtilis. The organic fertilizer is prepared by a method including: (1) crushing the cake of camellia oleifera seed and peanut stem, then adding the peat, and then adding an appropriate amount of water to make the mixture have a moisture content of 50% to 55%; (2) adding the biological matrix composite to the mixture obtained in step (1), conducting aerobic fermentation for 3 to 5 days with intermittent aeration, and then stacking and aging for 5 to 7 days to obtain a fermented organic fertilizer for use; (3) adding the potassium fulvate to the organic fertilizer obtained in step (2), stirring the resulting mixture thoroughly, and then crushing and sieving; and (4) putting the organic fertilizer mixture obtained in step (3) into a granulator for granulation, and drying to a moisture content lower than 20% to obtain a finished product. The present invention has advantages, such as abundant material sources, feasible technical routes, excellent application effects, and remarkable benefits.