Special fertilizer for prunella vulgaris and preparation method thereof

The invention relates to a special fertilizer for prunella vulgaris and a preparation method thereof. The special fertilizer for prunella vulgaris comprises the following raw materials in parts by weight: 6-10 parts of a slow-release nitrogen fertilizer, 1-3 parts of a slow-release phosphorus fertilizer, 10-15 parts of a slow-release potassium fertilizer, 5-8 parts of a slow-release organic fertilizer, 25-35 parts of decomposed cow dung, 5-7 parts of a nitrogen fertilizer, 2-4 parts of a phosphorus fertilizer, 8-11 parts of a potassium fertilizer, 1-2 parts of a microbial agent, 5-10 parts of starch, 2-5 parts of plant straw, 1-4 parts of plant ash and 1-2 parts of bone meal. The invention also provides a preparation method of the special fertilizer for prunella vulgaris. The method comprises the following steps: mixing the decomposed cow dung, the microbial agent, the plant straw and the plant ash, adding water, and carrying out stack retting and decomposing to obtain a mixture; and adding the starch and the