Preparation method of stropharia rugoso-annulata strain

The invention relates to the technical field of strain preparation, and discloses a preparation method of a stropharia rugoso-annulata strain, which comprises the following preparation steps: 1) material selection preparation: the strain comprises the following components: 100-200 g of potato, 1-5 g of peptone, 4-10 g of magnesium sulfate, 6-10 g of vitamin, 5-10 g of starch sugar, 8-13 g of agar, 1-6 g of potassium dihydrogen phosphate, 1-3 g of wheat flour and 800-1000 m l of water, then selecting potatoes with smooth surfaces, cleaning, and cutting into blocks; the peptone, the magnesium sulfate, the vitamins, the starch sugar, the agar, the monopotassium phosphate, the wheat flour and the potatoes are separately processed and then mixed again, and various nutrient substances for potato fermentation are processed to be sticky and then mixed; peptone, magnesium sulfate, vitamins, starch sugar, agar, monopotassium phosphate and wheat flour can be fully utilized, so that waste caused by insufficient utilizati