Carpet grass planting soil and preparation method thereof

The invention discloses carpet grass planting soil and a preparation method thereof.The preparation method comprises the following steps that S1, sea mud sand is desalted, residual tail mud obtained after the sea sand is separated out is subjected to filter pressing and dehydration, desalted tail mud is obtained, S2, the desalted tail mud is crushed and conditioned, tail mud crushed matter is obtained, S3, dry pig manure is subjected to pyrolysis and cooling in sequence, pig manure biochar is obtained, S4, the pig manure biochar is subjected to carbonization, and S5, the treated pig manure biochar is subjected to carbonization and drying to obtain the carpet grass planting soil. The method comprises the following steps: S1, crushing the tail mud, primarily mixing the crushed tail mud with pig manure biochar to obtain a biochar mixture, S5, secondarily mixing landscaping planting soil with the biochar mixture to obtain conditioned planting soil, and S6, curing the conditioned planting soil to obtain carpet gra