Beichuan Moss Tea is a branch of the long-term evolution of wild tea trees. The variety has long-term growth in the high mountains and dense forests above 1000-1800 meters above sea level. In order to adapt to the natural environment such as large temperature difference between day and night, many clouds, and short direct sunlight, the variety is cold-resistant. It is characterized by strong buds, thick leaves and high amino acid content. It is rich in content, simple catechins (60-80% of tea polyphenols) and ester catechins (about 70-80% of total catechins). The content is reasonable, the amino acid content is high, the finished tea tastes alcohol, the aroma is high, the soup color is green and bright, the leaf bottom is yellow-green bright, resistant to brewing, no pesticide residue, sweet aftertaste, is an excellent variety of green tea.

Surrounded by the mountains of Beichuan, the tea gardens are located in the mid-mountain zone at an altitude of 800-1200 meters. The annual average temperature is 11.2 °C. The annual accumulated temperatures of ≥0 °C and ≥10 °C are 4146 °C and 3200 °C, respectively. The frost-free period is 276 days. The sunshine hours are 925-1115 hours. The annual average rainfall of the main producing tea leaves is 1470mm. The soil is mostly acidic yellow loam soil with a pH value of 5.5-6.5. It has a climate ecological environment conducive to the growth of tea trees and the formation of good quality. Especially in the end of March to the beginning of April each year, after the temperature rises to 12 °C, it is affected by the cold wave, more rainy weather, large temperature difference between day and night, heavy fog, less sunshine, more conducive to the formation of fat and tender after the spring of tea tree Bud head. Excellent varieties The Beichuan tea tree variety is mainly based on the national-level fine-growing pit species and the provincial-level local fine-breeding Beichuan moss tea. Beichuan Moss Tea is characterized by its strong vitality, high yield, strong adaptability, strong cold resistance, strong resistance to stress, strong tea buds, good energy retention and abundant contents. It was recognized by the Provincial Tea Variety Committee in 1989. The province's fifth province has improved local varieties, and now the area of ​​the variety is 10,500 mu. The 0.2 million mu cloned tea plantation developed in recent years is mainly composed of Mingshan 131 variety and Fuding variety. Historical development Beichuan Yi Autonomous County has a long history of tea cultivation. According to the records of the county records, it began in Tang and Song. In the early days of the founding of the People's Republic In 1975, Chairman Mao’s instructions on how to open a tea garden on the hillside were put forward. The county party committee and the county revolutionary committee proposed the goal of “building a tea garden of 50,000 mu, producing 50,000 mu of tea, and building a national tea production base county”. The masses implemented the barren slopes to open the ladder to grow tea. In 1992, the county's tea garden area reached 50,000 mu. In the next 10 years, the annual output of fine tea in the county is stable at around 700 tons, which is a glorious period in the history of tea production in our county. In recent years, the county has developed 0.5 million mu of tea gardens, and the existing tea gardens have reached 55,000 mu, including 0.2 million mu of cloned tea gardens.

Beichuan Moss Tea Quality Technical Requirements (1) Variety. Appropriate local population species, squat pit species and famous small clonal clones such as Mingshan 213 and Fuxuan No. 9. (2) Site conditions. The altitude of the protected area is 650m to 1500m, the soil pH is between 4.5 and 6.5, the thickness of the yellow loam soil is not less than 50cm, and the organic matter content is ≥1.5%. The sandy loam is not less than 30cm, and the organic matter content in the 0cm to 30cm soil layer is ≥1.5%. (3) Cultivation management. 1. Seedling and planting: The tea plantation with sexual reproduction uses the local group to produce fine seeds for live broadcast after the frost-fall festival, with a seed amount of ≤10 kg per 667 m2 (mu); the asexually propagated tea garden adopts cutting seedlings, in mid-September, Cutting seedlings will be carried out in the next ten days. In the upper and middle of October each year, seedlings of 1 full-age tea seedlings are used for transplanting, and double-row plants are used, ≤7000 plants per 667m2 (mu). 2. Fertilization in tea gardens: mainly based on organic fertilizer, the base fertilizer is ≥500 kg per 667 m2 (mu) per year. 3. Picking: (1) Picking time: from late February to the end of June. (2) Picking standards: Fresh leaves are picked by hand according to the requirements of each grade of tea. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Process flow. 1. Flat tea craft: spread → killing → strips → incense → screening → packaging. 2. Curly-shaped tea process: spread → killing → 揉捻 → drying → frying dry and fragrant → screening → packaging. When drying, the initial temperature is between 110 ° C and 130 ° C, and the time is about 4 to 7 minutes, and then the temperature of the bottom pot is lowered to about 80 ° C for slow drying at a low temperature until the water content of the tea is about 10%. When frying the dried incense, raise the temperature to 120 ° C to 130 ° C for the scent, until the hand-picked tea can be into a powder and can be. (5) Quality characteristics. Category Raw material shape Inner quality Corrugated color Clarity Aroma odor flavor Soup color Leaf bottom flat tea Whole bud flat straight yellow green, shiny net evenly fragrant high lasting fresh alcohol bright yellow bright whole bud, yellow green bright curly shape tea one bud one leaf The initial exhibition to the first bud and the second leaf is tightly curled, the front is green, the whole is fragrant, the lasting is mellow, the green leaves are bright and green, and the green leaves are bright. 3. Safety requirements: The product safety index must reach the national correlation with similar products. Provisions.

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Producers within the scope of protection of Beichuan Moss Tea Geographical Indication Products may apply to the Beichuan County Quality and Technical Supervision Bureau of Sichuan Province for the use of the “Special Mark for Geographical Indication Products”, which is reviewed by the Sichuan Provincial Bureau of Quality and Technical Supervision and approved by the AQSIQ. Announcement approval. The statutory testing agency of Beichuan Moss Tea is designated by the Sichuan Provincial Bureau of Quality and Technical Supervision.