Pleurotus eryngii, a specialty of Pingquan County, Hebei Province, is a geographical indication product of China. At the end of Yanshan mountain range in Pingquan county, there is abundant forest stock suitable for edible fungi production, and corn cob, wheat bran, rice husk, soybean straw and other agricultural and sideline products are sufficient; The production is located at an average annual temperature of 7.3 degrees Celsius, with a large temperature difference between day and night, and unique climatic conditions, which is suitable for vigorously developing the production of off-season edible fungi. It is an "advanced county of edible fungi industry in China". Pleurotus ostreatus is the main edible fungus variety in Pingquan County, and it has occupied a place in the whole country, and it is also the center of price formation of Pleurotus ostreatus in China. Pleurotus ostreatus is exported to Japan, South Korea, Canada, the United States, Western Europe, Southeast Asia and other countries.
Pingquan County is the northeast gateway of Hebei Province, bordering Liaoning in the east and Inner Mongolia in the north. It is known as "the lintel of Beijing and Hebei, the thoroughfare of Liaoning and Mongolia". The county has a total area of 3,308 square kilometers, 720,000 mu of cultivated land and a forest coverage rate of 52%, and governs 20 townships and 334 administrative villages. Pingquan has a vast territory, abundant resources, suitable climate, convenient transportation and developed communication, which makes the edible fungus industry present a strong development momentum. The county is backed by Liaoning and Mongolia and faces Beijing and Tianjin, which provides good transportation conditions for the export of edible fungi products. There are 2.59 million mu of forest land and 3 million cubic meters of forest stock in the county, and there are 550,000 mu of Robinia pseudoacacia forest which is most suitable for edible fungi production, with an annual output of/kloc-0.0 million tons of corncob and agricultural and sideline products such as wheat bran, rice husk and bean straw, which provide abundant resources for industrial development. Pingquan is located at the end of Yanshan Mountains, with an average annual temperature of 7.3 degrees Celsius and a large temperature difference between day and night. Its unique climatic conditions are suitable for vigorously developing the production of off-season edible fungi. 2/kloc-At the beginning of the 20th century, Pingquan County became one of the four major edible fungi producing areas in China, a large edible fungi production base and product distribution center in northern China, and was named as "National Advanced County of Edible Fungi Industry" by China Edible Fungi Association, the first batch of "Demonstration County of Horticultural Export Base" by the state, and the "Hometown of Edible Fungi Specialty in Hebei" by the provincial government. Production situation The cultivation of edible fungi in Pingquan County began at the end of the 20th century. By 2009, the county had 550 professional and technical backbones, more than 3000 technical demonstration households in towns and villages, forming a strong technical team of edible fungi industry. It has successively established technical cooperation relations with Hebei Institute of Microbiology, Zhejiang Qingyuan Edible Fungi Institute, Japan Nagano Miyazawa Institute of Rhodotorula, Japan Chiba University and other scientific research units and institutions, laying a foundation for the introduction of new technologies and the development of new varieties. 80% of edible fungi products in this county are exported, and the market covers Japan, South Korea, Canada, the United States, Western Europe, Southeast Asia and other countries, making it the most competitive product in the world. Pleurotus ostreatus is the main edible fungus variety in Pingquan county, and it has also occupied a place in the country.
At the same time, it is the price formation center of Pleurotus ostreatus in China. As a well-known edible fungi production base and product distribution center in northern China, Pingquan is known as the "hometown of edible fungi in China". In 20 12, Pingquan was one of the largest production bases of high-quality mushrooms in the north, with an annual output of 90,000 tons of high-quality Pleurotus ostreatus, accounting for one-third of the national total. 2/kloc-0 At the beginning of the 20th century, Pingquan County seriously implemented the strategy of "establishing bacteria by quality, developing bacteria by science and technology, leading strong bacteria and living bacteria in the market", and vigorously developed the characteristic industry of edible fungi. In 20 12 years, the total output of Pleurotus ostreatus reached100000 tons, accounting for 25% of the total output in China. Geographical indications According to the Administrative Measures for Geographical Indications of Agricultural Products, Xingke Edible Fungi Professional Cooperative in Pingquan County, Hebei Province applied for the registration and protection of national geographical indications of agricultural products for "Pingquan Pleurotus ostreatus". After preliminary examination, expert evaluation and publicity, it met the registration procedures and conditions of geographical indications of agricultural products, and was granted registration on August 3, 20 12.
territorial scope
The geographical indications of agricultural products of Pleurotus eryngii in Pingquan County are protected in Wolong Town, Pingquan Town, Yangshuling Town, Taitoushan Township, Songshutai Township, Yushu Linzi Town, Maolan Ditch Township, Pingfang Township, Loess Liangzi Town, Beiwujiazi Town, Liuxi Township, Qijiadai Township, Qigou Town, Wangtufang Township, Dangba Town, Guozhangzi Township, Xiaosigou Town and Nanxi Township. Geographical coordinates are located at118 21'to11915', and 40 24' to 40 40' north latitude, subject to the boundary of Pingquan county. The protected area is 620,000 mu, the production area is15,000 mu, and the annual output is10,000 tons.
Product quality characteristics
1, external sensory characteristics: the fruiting body of Pleurotus ostreatus in Pingquan has dense tissue, large individual, round mushroom shape, yellow and white color, thin mucus layer and difficult umbrella opening; Mushroom stalk is long, with few scales, and has a special fragrance. 2. Intrinsic quality: Pleurotus ostreatus is not only palatable, but also nutritious. The results showed that the contents of aspartic acid, leucine, alanine, total amino acids, protein and vitamin B2 in Pleurotus ostreatus were significantly higher than those in Pleurotus ostreatus. Threonine, serine, proline, methionine, glycine, cystine, valine, isoleucine, tyrosine, phenylalanine, lysine, histidine, arginine, fat and phosphorus are all higher than those of common Pleurotus ostreatus. 3. Quality and safety requirements: 3. 1. Do a good job in environmental sanitation and disinfect mushroom sheds, bag surfaces, tools and utensils. Mushroom roots, rotten mushrooms and waste should be removed in time and kept away from mushroom growing places. 3.2. To prevent the culture material from carrying bacteria, it must be completely sterilized and inoculated under aseptic conditions, and the inoculation must be carried out under low temperature and aseptic conditions. Culture at the appropriate temperature, with the maximum temperature not exceeding 28℃, and strengthen ventilation. 3.3. The strains shall be of the appropriate age with strong vitality. All degraded species, aged species and contaminated species by miscellaneous bacteria should be eliminated. 3.4. Nutrients such as wheat bran and gypsum should be added in proportion when the culture material is prepared, and it is not advisable to overdo it. 3.5. Separate management measures shall be adopted for contaminated bacterial bags. Light pollution can be treated by local injection of lime water, and pesticides are prohibited; At the same time, strengthen the management of temperature, humidity and ventilation in mushroom shed. Yeah, seriously polluted fungus bags. It is treated by burying or producing grass rot fungi after fermentation. 3.6, mushroom shed doors and windows installed insect nets, prevent adults from flying in, put an end to the source of insects. Lime powder is often sprinkled in the mushroom shed to sterilize and kill insects. 3.7. After fruiting, use biological agents or use a combination of black light, yellow board, insect net and fly lamp to trap and kill insects. The product quality meets the requirements of the national agricultural industry standard NY5095－2006 Pollution-free Edible Fungi.