"Daily Agricultural Economics" reported in the 20120510 issue: Ulmus elm, also known as Ulmus elm, scientific name: Dermatophytosis, is naturally distributed in the three northeastern provinces of my country. Born on the dead trunks or cutting stumps of elm and spring elm. The fruiting body is flat or spherical at first, and becomes kidney-shaped, ear-shaped or fan-shaped after unfolding. Sessile, often stacked together, gelatinous when fresh, hard and brittle after drying, up to 15 (30) cm in diameter and 3 cm thick. The edges are involute and sometimes wavy; the surface of the cap is covered with a dense layer of villi, which is milky white, apricot to orange-red. The spores are oval to sausage-shaped, smooth, and colorless. The fruiting body of Ulmus elata has a gelatinous texture and is similar in shape to black fungus, but is pink-brown and elastic. Elm fungus is delicious, crisp in texture, and has medicinal effects. It enjoys the reputation of "the king of forest foods". Analysis shows that the fruiting body of Ulmus elata contains the active ingredient of the Western medicine furatoril. The protein content of Ulmus elegans is 20.99%, which contains all 17 kinds of amino acids, especially the 7 essential amino acids that the human body cannot synthesize by itself and can only rely on external intake. , accounting for 40% of the total amino acids. And contains a variety of vitamins and trace elements. Elm ear contains certain natural medicinal ingredients that can replenish, neutralize and strengthen kidney qi, and is used to tonify deficiency, treat hemorrhoids, diarrhea and other gastrointestinal diseases. Elm fungus extract can be used as an additive raw material for various health products and functional foods. People's understanding of the edible and medicinal value of elm fungus has deepened, and the market demand is increasing. Wang Haijun, an edible fungus grower in Yutai County, Shandong Province, saw business opportunities and artificially cultivated elm fungus and achieved large-scale success. Ulmus elata is a low-temperature bacterium. The fruiting body tissue is separated and the ear tissue is cut out and placed on PDA culture medium to germinate and grow. Then the tip hyphae are picked for purification and culture. Wang Haijun, an elm grower, believes that the color, taste and texture of artificially cultivated elms are not inferior to those of wild elms, and they have an advantage in price. Dried elms sell for 70 to 80 yuan per kilogram in the market, while wild ones are much more expensive. Artificially cultivated elm fungus meets the needs of more consumers and has become a good variety for mushroom farmers to increase their income and become rich.