Vermicompost derived from mushroom residues improve soil C / P cycling, bacterial community and fungal abundance

a. Both soil physicochemical indicators and enzyme activity measurements were conducted in the laboratory PH: Soil water ratio 1:2.5, measured using a pH meter after shaking (pH 700 bench meter, Eutech Instruments) Soil organic carbon: chemical oxidation determination using K2Cr2O7 Soil total carbon and nitrogen: Air dried soil with a 0.16mm sieve was used for determination using an elemental analyzer (Analyzer vario MICRO cube, Elemental, German) Total phosphorus in soil: determination using perchloric acid digestion method Soil available phosphorus: extracted with 0.5M sodium bicarbonate, then determined by molybdenum blue colorimetric method Soil available potassium: Determination using a flame photometer Acid and alkaline phosphate monoesterase activity: Incubate for 1 hour with p-nitrophenol as substrate in buffer environments with pH 11.0 and 6.5, respectively, at 37 ℃, and then measure using an enzyme-linked immunosorbent assay (ELISA) Dehydrogenase activity: Incubate at 37 ℃ for 24 hours using TTC as