Clouds and black fungus are rich in nutrients and delicious in flavor. They have the effects of clearing the lungs and replenishing qi, nourishing blood and promoting blood circulation, and calming the pain. Black fungus is a kind of fungus food with rich nutrition and delicious flavor. It has the functions of clearing the lungs and replenishing qi, nourishing blood and promoting blood circulation, calming the qi and relieving pain, and can treat hemorrhoids hemorrhage, uterine bleeding and postpartum weakness.

“Cloud and Black Fungus” is a “National Geographical Indication Certification Mark” product. Clouds and black fungus are a major industry for the cloud and farmers to increase their incomes. The annual production capacity is more than 30 million bags, and the output value exceeds 100 million yuan. “Cloud and Master” also guides farmers from different regions to plant black fungus in more than 160 counties in 28 provinces across the country, with a production value of about 280 million yuan. With the development of the industry, Yunhe County has become a distribution center for black fungus in southern China, with annual sales of 500 million yuan. Yunhe has long been the main producing area of ​​black fungus in southern China, and has a long history of cultivation. In 1981, Yunhe successfully selected the "Xinke" black fungus variety with unique quality, such as single piece, color depth and foam resistance. In 1987, it was assessed as the artificial cultivation black fungus base county by the Zhejiang Provincial People's Government. In 2001, Yunhe County artificial black fungus opened a new breakthrough in bionic cultivation technology. Since 2002, it has been promoted and applied. In 2010, the cloud and black fungus pollution-free bag material integration supporting technology research and standardized production demonstration project won the second prize of Zhejiang Science Progress. . In order to accelerate the healthy development of the cloud and black fungus industry, the Yunhe County Government has issued a number of “Opinions on Accelerating the Development of the Black Fungus Industry” and “Management Measures for the Production and Management of Edible Fungi in Yunhe County”, and formulated and implemented the cloud and black. The local standards of fungus promoted the rapid development of the cloud and black fungus industries. At the same time, brand building promotes the development of the cloud and black fungus industry and increases the added value of products. In 1994, Yunhe Black Fungus won the gold medal at the International Product Seminar; in 1995, it won the Silver Award at the National Agricultural Fair; from 2001, it won the Gold Prize of the Provincial Agricultural Conference for seven consecutive years.

Technical requirements for quality of cloud and black fungus (1) Variety. "Xinke" was selected for the cultivation of Duanmu; "Xinke" and "916" were selected for artificial earwood cultivation. (2) Cultivation conditions. 1. Culture conditions: cultured under natural temperature conditions. The moisture content of the wood is 30% to 40%; the water content of the artificial ear is 50% to 55%. Shade and shelter from the rain to keep the air fresh. 2. Ear field selection: 150m to 900m above sea level, long sunshine time, open air, no sunlight, small temperature difference, high air humidity, clean and sufficient water source, convenient drainage and irrigation, no pollution sources around. (3) Production technical requirements. 1. Quality of the strain: The mycelium grows thick, white, and free of bacteria. The ear buds are formed after seeing the light. 2. Inoculation: Sectional wood is inoculated from February to April; artificial ear wood is inoculated from August to October. (1) Selection of tree species: Duanmu selects broad-leaved trees of 8 to 20 years old and branches of 8cm to 18cm in diameter. It is forbidden to use oily and aromatic trees; artificial ear wood is selected without oil and fragrance. Broad-leaved trees. (2) Inoculation density: the diameter of the inoculation hole of the segment wood is 1.5 cm to 1.8 cm, the longitudinal distance is 8 cm to 10 cm, the lateral distance is 6 cm to 8 cm, and the artificial ear wood is 3 to 4 holes each. 3. Arranging ears: Duanmu is scheduled to be held from May to June, with 45,000 to 60,000 sections per hectare; artificial algae is scheduled to be in the period from October to December, with 100,000 to 120,000 sections per hectare. 4. Moisture management: Spray water in a mist and spray water once or twice a day. Before the ear buds are formed, each time the water is sprayed for 30 minutes to 60 minutes; after the ear buds are formed, each time the water is sprayed for 60 minutes to 120 minutes. (4) Harvesting and processing. Ears are mature from seven to eight, and they are harvested in batches on sunny days. Dry or dry to moisture ≤ 14%. (5) Quality characteristics. 1. Sensory features: black or dark brown on the face, shiny. The individual pieces are ear-shaped and fleshy, and the thickness of the ear piece is 1.2 cm or more. It has a good taste and is unique. Resistant to foaming, soaking coefficient, and resistant to boiling. 2. Physical and chemical indicators: dry/wet ratio of 1:13 or more, total sugar ≥ 25.0%, crude protein ≥ 8.5%, crude fat ≥ 0.80%, crude fiber 3.5% to 5.5%. 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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Producers within the scope of protection of cloud and black fungus GI products may submit an application to the Zhejiang Provincial Quality and Technical Supervision Bureau of Yunhe County for the use of the “Special Mark for Geographical Indication Products”, which shall be examined by the Quality and Technical Supervision Bureau of Zhejiang Province and reviewed by the National Quality Inspection. The General Administration announced the approval. The statutory testing institutions for clouds and black fungus are designated by the Zhejiang Provincial Bureau of Quality and Technical Supervision.