Shangzhi black fungus is made from broadleaf sawdust such as eucalyptus and birch, which completely simulates its natural properties. The ear piece is thick, elastic and translucent; the ear surface is smooth and bright, and it is like a bowl in the shape of a bowl; the ear is soft and refreshing; the taste is refreshing, slippery but not greasy, and the ear is rich and nutritious. In the late spring and early summer, the early fog after the rain, the mountain spring forest, the soft spring ears quietly bloom; the autumn wind is cool, the white mist, the rich autumn ears burst into bloom. Ice and snow in the winter, black fungus re-born with water, nourishing the passion of Xuexiang people.

Technical requirements for the quality of black fungus in Shangzhi City 1. Proven local wild black fungus. Second, the environmental conditions within the scope of production of the choice of sufficient light, ventilation to the sun, the temperature difference is greater, as the ear field. Third, the production process management Ingredients: mainly used in the local forestry industry by-products such as eucalyptus, birch and other hard wood sawdust with corncob and bran. Formula: 82% wood chips, 15% bran, 1.5% soy flour, 1% gypsum, 0.5% white ash, 60% water content. 2. The size of the original seed bag is 15 cm x 30 cm, and the size of the cultivating seed bag is 17 cm x 34 cm. When purchasing the bacteria bag, first look at the appearance, the transparency of the bag is good, the sealing at the bottom of the bag is even, and the outer edge of the bag should be more than 1cm from the bottom of the bag. 3. Sterilization: The sterilization method is sterilized by atmospheric pressure steam. The temperature in the bag is up to 100 ° C within 3 hours, and the fire extinguishing furnace is kept for 8 hours. When sterilizing, care must be taken not to make the tampon of the bag mouth moist. 4. Inoculation: firstly sterilize the inoculation room (or inoculation box) with ultraviolet light for 30 minutes, sterilize and purify the air, take out the bag from the sterilization pot, cool it to below 30 °C, and put it into the inoculation room (or inoculation box). ), and then fumigated with aerosol sterilization agent for 0.5 hours to 1 hour, after the outer wall of the original seed bag is wiped and disinfected with 75% alcohol, the original seed bag mouth is facing the cultivation bag mouth, and the strain is quickly and accurately connected into the cultivation bag mouth. Act faster when operating, reducing the chance of bacterial infection. 5. Hair culture management: (1) Placement of cultivation bag: The cultivation bag is placed on the bed frame of the sterilized culture room to cultivate the bacteria. The cultivation bag should be placed upright and neatly in the initial stage of cultivation, and the bag should be placed at an appropriate distance. The bottom of the bag is placed facing the outside with the mouth facing. (2) Control the temperature and humidity: the temperature of the culture chamber should be maintained at 24 °C to 26 °C within 15 days after the inoculation. In the later stage of the culture, the indoor water should be properly sprayed to keep the relative humidity of the air at about 65%. Do not spray water directly onto the bag to prevent contamination by bacteria. (3) Controlling the intensity of light: Black fungus does not require the formation of fruit bodies during the hyphal culture stage to prevent nutrient consumption. Therefore, the windows of the culture room should be shielded from light to make the indoor light close to the dark, which is conducive to the growth of mycelium. (4) Indoor air should be fresh: ensure that there is enough oxygen to maintain the normal metabolism of black fungus hyphae. During the cultivation of mycelium, the culture chamber should be ventilated for 20 minutes to 30 minutes per day. In the later period, the ventilation time and frequency should be increased, and the carbon dioxide in the culture chamber should not exceed 1‰. (5) Timely inspection and treatment of contaminated cultivation bags: The cultivation bags are prone to infection of various bacteria during the cultivation process. The pollution should be checked within 20 days of breeding, and every 2 to 3 days after inspection, it is found that the pollution is serious. The cultivation bag should be taken out in time and buried or burned away from the cultivation room. 6. Opening the ear: The opening of the cultivation bag is opened by a nail-eye opening machine, and each bag has an opening of 140 to 160 holes. 7. Ear management: The cultivation bag is cultured for 40 days to 50 days, and the mycelium is overgrown with the culture material to become a fungus bag. (1) Select the earing site: a flat ground that requires clean surroundings, sufficient light from the source, and good ventilation. (2) Bed: The bed is 10 cm to 15 cm high and 150 cm to 200 cm wide. There is a working path of 50 cm between the two beds. (3) Sub-bed: 5 days after the opening of the cultivation bag, after the white hyphae grow in the opening, the bed is placed and the density is 20 bags per square meter. (4) Maintaining humidity: During the earing, it should be based on enhanced moisturizing. Watering should be done every morning and evening, dry and wet, alternating wet and dry, and the relative humidity of the air should be no less than 80%. 8. Fourth, picking and processing 1. Picking: The ear piece is thick and stretched, and the ventral surface is not seen before the white spore powder is ejected. 2. V. Quality characteristics 1. Sensory features: the ear piece is thick, elastic, translucent, the back of the ear is slightly grayish black, the water is good, the hair is moderate and uniform, and the ear flaps are less curled. 2. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the scope of the production of Shangzhi black fungus may submit an application to the Quality and Technical Supervision Bureau of Shangzhi City, Heilongjiang Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Heilongjiang Provincial Bureau of Quality and Technical Supervision and reported to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The testing mechanism of Shangzhi Black Fungus is selected by the Heilongjiang Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.