The hops that are abundant in Yumen are recognized as the best latitude and longitude in the world hop industry. Yumen hops have a richer aroma and a yellowish green color. The quality is superior to other products in China. Since 1997, Yumen City has supported the promotion of hops as a characteristic industry that promotes agriculture and income. In recent years, through the expansion of bases, optimization of resource allocation, integration of technical forces, improvement of industrial systems, adjustment of business structure and other measures to achieve the hop industry integration of planting, scientific research, processing, sales as an industrial development pattern, formed from hop planting to compression Flower processing and granule flower processing, extract processing, hops acid separation, one-stop hops product processing industry chain, has become the leading hop industry in the province and even the country.

Historical origin China is one of the origins of wild hops. Wild hops are concentrated in the four provinces of Shaanxi, Gansu, Ning, Xin and Yu, and Yumen is among them. The artificial cultivation of Chinese hops began in 1921 and was planted on the slope of the Heilongjiang River. The cultivation of hops in China in 1921-1949 was only experimental. With the rise of New China in 1949, the beer industry also ushered in the spring of development. The hops that are the soul of beer have also begun to grow in large areas. Geographical environment The Yumen-Jiuquan geographical area is the transitional zone between the Qinghai-Tibet Plateau and the Inner Mongolia Plateau. There are three major river systems, the Shule River, the Heihe River and the Halteng River, all of which originate from the Nanshan Glacier Snow Area, which is the life and industry of the residents in the area. The main water source for production and agricultural irrigation has an annual runoff of about 3.223 billion cubic meters. The water resources are not very rich, but it can basically meet the needs of agricultural production, and the water quality is good, which is conducive to the growth of hops and other crops. Climatic characteristics The geographical area of ​​Yumen-Jiuquan belongs to the continental semi-desert climate. Its characteristics are: the climate is dry and rainfall is less, the evaporation is strong, the sunshine is long, the winter and the summer are hot and the temperature difference is large, and the autumn is cool and the spring is dry and windy. The maximum temperature can reach zero above 40 °C, the lowest is minus 31.6 °C, the annual average temperature is 3.9 °C--9.3 °C, and the temperature difference between day and night is large. The average annual sunshine hours is 305.4 hours, the average percentage of sunshine is 69%, as much as 78% in October, and the frost-free period is 127-158 days. Quality characteristics The physicochemical indicators and sensory indicators of the compressed hops, granules and hops extracts covered by the Yumen hops geographical indications meet the requirements of various products in the GB/T20369-2006 national standard "hops". In terms of physical and chemical properties, the Qingdao large flower variety in Yumen hops has a balanced α-acid content and β-acid content, and the α/β value is between 1.1 and 1.5. In terms of sensory indicators, Yumen hops have a richer aroma and a yellowish green color. This is a distinguishing feature from the hops of other origins. The scope of protection of Yumen hops geographical indication products is Yumen Town, Xiaxi Township, Huangzhawan Township, Liuhe Township, Chijin Town, Huahai Town, Qingquan Township, Xiaojinwan Township, Liuhu Township, etc. in Yumen City, Gansu Province. 9 townships and drinking horses industrial companies, Huanghua Farm, Yusheng Industrial Company, Agricultural Reclamation Construction Company and other four agricultural groups are governed by administrative areas.

Yumen hop quality technical requirements (a) variety. Bitter and fragrant varieties of Qingdao Dahua, high formic hops, fragrant flower hops. (2) Site conditions. The altitude of the protected area ranges from 1100m to 1900m, and the soil texture is sandy loam and loamy soil, with a pH of 7.5 to 8.5. The soil organic matter content is ≥0.9%, and the soil layer thickness is ≥0.5m. (3) Cultivation management. 1. Seedling: Breeding by asexual reproduction. 2. Planting: (1) Planting time: Spring March 25 to April 10, autumn October 15 to October 30 (2) Planting density: ≤3000 plants per hectare. 3. Cultivation techniques: (1) Open the hole and excavate the soil: After the soil is thawed in spring, the seedling is the center, and the hole is excavated to open the hole. The hole diameter is 50 to 80 cm, and the hole depth is 25 to 35 cm, so that the perennial rhizome is fully exposed. (2) cutting buds, rooting: dig a hole in the morning when cutting buds, and cut buds in the afternoon. In the process of cutting buds, if the rhizome is found to be too high, it is necessary to reduce the node in time; if the original rhizome is aging, it is necessary to choose a strong running strip instead. (3) Whole buds and fixed seedlings: The whole buds are carried out about 15 days after the buds are cut, and the remaining buds are further weakened and strengthened. When the seedling height is 50cm to 80cm, the seedlings are the main stem (vine) density: Qingdao large flower 180 to 260 vines / 667m2 (mu), Columbus 1900 to 2200 vines / 667m2 (mu), Cascade 280 to 420 vines / 667m2 (mu). (4) Hanging vines: When the seedling height is 50cm, the vines are put on shelves in time. (5) Cloth network: adopting three-dimensional cloth net technology, the distribution of branches under the net accounts for about two-thirds of the total number of branches, and the branches on the grid are evenly distributed and have good light transmission. The length of the side branches is 80 cm to 100 cm. (6) Fertilization: mainly organic fertilizer, applying decomposed organic fertilizer per hectare ≥ 30 tons per year, and using quick-acting fertilizer per hectare in the whole growth period of hops: pure nitrogen content 276kg, phosphorus pentoxide content 172kg, potassium oxide content 81kg, Appropriate increase of iron, zinc, boron, molybdenum and other trace element fertilizers, avoid using potassium chloride, so as not to affect the quality and flavor of hops. (7) Watering: The seedling stage should control the water, and it should be watered once every 10 to 15 days from the shelf to the picking period to keep the field moist. Watering is not allowed for 20 days before picking. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Harvesting. When the flower body is yellow-green, the pollen is rich, the smell is fragrant, the sticky hand is sticky, the sound is gripped, and the formic acid content in the field is u003e7%. (5) Processing. 1. Compressed hops: (1) Process: fresh hops → airing → drying → regaining → pressing → packaging. (2) Main process links: 1 air-drying: After the fresh hops are harvested, they will be sent to the baking room for drying within 6 hours. The flowering shed has a flower thickness of 50 cm to 60 cm and is turned over once every hour to ensure that the hops do not heat up and deteriorate. The flowers in the hanging shed are sent to the oven for baking within 6 hours. 2 baking: the thickness of the flower is 45 cm to 50 cm, the temperature is 45 ° C to 65 ° C, the air volume is 1000 to 1300 m 3 per square meter, and the water content of the flower is 3% to 4%, and the flower is dried when the flower is evenly dried. The total baking time is 4.5 to 5 hours. 3 Resurgence: Use mechanical automatic regain or artificial mist regain, the amount of return water is between 6% and 9%, and the return water should be even. 2. Particle hops: (1) Process: Compressed hops → crushing → sieving → mixing → granules → vacuum nitrogen filling → packaging → inspection → storage (2) Main process links: 1 smashing: according to the production process sheet requirements , the batch of compressed hops is unpacked and broken. 2 Screening: Remove the foreign matter in the hops, the diameter of the mesh hole is 2 to 6 mm. 3 Mixing: In the mixing chamber, mix different levels of hop powder, and regain moisture to 7% to 8% of water content. 4 granules: extruded at ≤ 54 ° C, granulated. The processed hop particles have a temperature between 50 and 52 °C. 5 Cooling: In a belt cooler with a cyclone, the pellets were pressed at a pressure of 300 kg ∕ cm 2 and the particle diameter was about 6 mm. The hop pellets were cooled to within 20 ° C within 4 to 5 minutes, and the hop powder was sieved. (6) Quality characteristics. 1. Sensory features: fresh yellow and green color, rich floral, fresh taste, pleasant bitterness and outstanding aroma. (1) Compressed hops: a flaky hop flower ball, light yellow green and shiny, with a distinct fresh hop aroma, no smell. (2) Granule hops: cylindrical shape with a length of 6 mm to 8 mm and a diameter of about 6 mm, yellow-green or green luster, with obvious fresh hop aroma and no odor. 2. Physical and chemical indicators: (1) Qingdao large flower varieties: α-acid and β acid content are balanced, α-acid ≥6.0%, β-acid ≥4.5%, α/β value between 1.00 and 1.50. (2) High formic acid hops, α-acid ≥ 14%, β-acid ≥ 4.5%, storage index H.S.I 0.40 to 0.50, humulone 30 to 35%, hop oil 1.5 to 2.5 ml/kg. (3) fragrant flower type hop, α-acid ≥ 4.5%, β-acid ≥ 4.5%, storage index H.S.I0.35 to 0.45, humulone 10 to 16%, hop oil 0.8 to 1.5 ml/kg. 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 Yumen hops GI products may submit an application to the Quality and Technical Supervision Bureau of Yumen City, Gansu Province for the use of “Special Marks for Geographical Indication Products”, which shall be reviewed by the Quality and Technical Supervision Bureau of Gansu Province and announced by the General Administration of Quality Supervision, Inspection and Quarantine. Approved. The legal inspection agency of Yumen hops is designated by the Gansu Provincial Bureau of Quality and Technical Supervision.