Auricularia auricula chaff functional matrix fertilizer and preparation method thereof

The invention discloses a black fungus chaff functional matrix fertilizer and a preparation method thereof, and belongs to the technical field of agriculture. The black fungus chaff functional matrix fertilizer is prepared from the following raw materials in parts by weight: 40 to 60 parts of black fungus chaff, 10 to 20 parts of straw, 20 to 40 parts of chicken manure, 3 to 5 parts of kaolin, 5 to 8 parts of zeolite powder, 10 to 15 parts of vermiculite, 3 to 5 parts of urea, 0.5 to 1 part of ferrite, 15 to 20 parts of humic acid, 3 to 5 parts of phosphogypsum, 5 to 8 parts of biological activated carbon and 3 to 5 parts of compound microorganisms. The prepared black fungus chaff functional matrix fertilizer is rich in nutritional ingredients, the salt content is 0.03-0.04%, the pH value is 6.7-6.9, and the black fungus chaff functional matrix fertilizer has a certain density and cannot float along with water. When the matrix fertilizer is used for seedling culture and cultivation of vegetables, Chinese herb