Broccoli culture medium and preparation method thereof

The invention discloses a broccoli culture medium and a preparation method thereof, and relates to the field of culture mediums. The broccoli culture medium consists of 710 to 850 parts of mushroom residue, 2.5 parts of a fermentation agent, 58 to 70 parts of urea, 42 to 50 parts of a calcium magnesium phosphate fertilizer, 54 to 65 parts of potassium sulfate, and 1 part of borax. The method comprises the following steps: mixing the fermentation agent, the urea, the calcium magnesium phosphate fertilizer, potassium sulfate and borax, flatly laying part of a mixture into a layer, then flatly laying a layer of mushroom residue on the mixture, sprinkling certain mixture on the layer of mushroom residue, laying a layer of mushroom residue, repeating the steps, dripping water on the piled mushroom residue pile, then turning over at least twice, and then conducting high-temperature fermentation and decomposition. Compared with the prior art, the raw materials are wide in source and low in cost, the calcium magnesiu