The invention relates to a culture medium for wild-taste
pleurotus eryngii and a preparation method of the culture medium. The culture medium comprises the following components in percentages: 57.5% of peanut vines, 22.5% of
cottonseed hulls, 17.5% of potatoes, 0.25% of
sucrose, 0.15% of quicklime, 0.3% of slaked
lime, 0.25% of
calcium superphosphate, and 0.225% of
magnesium sulfate. According tothe method disclosed by the invention, in the preparation process, the ground potatoes are immersed into hot water with a
water temperature of higher than 50 DEG C, quick stirring is performed, the amount of hot water can be ensured that a potato liquid is in a dilute and thin paste state after the potatoes are fully dissolved and expanded and cooled to normal temperature, the
cottonseed hulls harvested in a current year are put into a
retting pond, a certain amount of water is added, the
retting pond is kept relatively sealed, the
environmental temperature in the
retting pond is 32 DEG C or more, retting is performed, the potatoes and the
cottonseed hulls are mixed with the fermented peanut vines, so that
nutrient ingredients are decomposed and easier to absorb; the
sucrose, the quicklime, the slaked
lime, the
calcium superphosphate and the
magnesium sulfate are sprayed on the surface of the culture medium, so that absorption and growth of the
pleurotus eryngii are facilitated; and the peanut vines facilitate improving the wild taste of the
pleurotus eryngii.