Changshan County has a long history of cultivation of Camellia oleifera. According to the genealogy of Shangyouge Village in Fangcun Town, Changshan oil tea production has been widely distributed in the late Song and Yuan Dynasties. In the 21st year of the Republic of China (1932), the county had produced more than 1,000 tons of tea oil.

Changshan County has a long history of cultivation of Camellia oleifera. According to the genealogy of Shangyouge Village in Fangcun Town, Changshan oil tea production has been widely distributed in the late Song and Yuan Dynasties. In the 21st year of the Republic of China (1932), the county had produced more than 1,000 tons of tea oil. In the 24th year of the Republic of China (1935), the county's oil-tea harvest was 400,000 kilograms. After the liberation, the Changshan County Committee and County Government paid great attention to the production of oil tea. At the beginning of the founding of the People's Republic of China, the policy of exempting the three-year tax exemption after the ridiculous oil tea forest was enacted, and vigorously encouraged the production of oil tea. In 1956, the province's first oil tea testing ground was established. In 1963, the county party congress made a resolution on "building a tea-tea base" and issued a series of supportive policy measures. In 1963, the country's first oil tea research institute was established. He hosted the third meeting of the National Camellia Research Collaboration Group, collaborated on the scientific research of Camellia cultivation and production technology, and achieved a number of important scientific research results. In 1979, it was included in the national oil tea base county. From 1990 to 1992, the organization implemented nearly 40,000 mu of low-reform projects with rehabilitation, replanting, pruning, fertilization and grafting as the main contents. The highest oil-tea forest area in the county has grown to 290,000 mu, and the annual output of oil-tea seed has reached more than 6,000 tons. After 1984, some Camellia forest land was replanted into cuffs and citrus. The area has gradually decreased. By 1999, the county had reduced by 1880 hm. Since 2000, the area of ​​oil tea in the county has basically stabilized at 17,710 hm, and the output of camellia seed has reached 4,000 tons. On January 23, 1990, Governor Shen Zulun inspected Changshan Camellia. The Forestry Department and the Provincial Forestry Department listed Changshan as the starting county for the first phase of the Camellia Low-reform Project. Since the development of the "Changfa" camellia high-grade cooking oil in 1992, all the oil tea production and marketing units in the county have raised their brand awareness. So far, the county has developed "Dongcha", "Changfa", "Shan Shen", "Changyu", etc. Multiple camellia oil brands. The growth of Camellia oil is high in the north and south, low in the middle, inclined from west to east. It belongs to the Qianligang Mountains. The distribution is mainly low mountains and hills. The forests are good, the climate is mild and humid, the four seasons are distinct, the rainfall is abundant, and the temperature difference between day and night is large. According to the statistics of the County Meteorological Bureau, the annual average temperature is 16.5-17. 1 °C, the annual average accumulated temperature of u003e10 °C is 5100-5200 °C, the frost-free period is 220-230 days, and the annual precipitation is 1730-830 mm. The soil is dominated by yellow loam soil, and the parent material is the residual and accumulation of weatherings such as granite and quartz sandstone. The texture is sandy loam, the soil layer is 50-80 cm thick, PH 4. 5-5. 5, and the organic matter content is more than 2%. The humus layer is more than 10 cm thick and is the best fertility soil in the mountainous soil of this county. The base has a single hydrological condition and is rich in water resources. The irrigation water is dominated by natural precipitation. The main production area is far away from the urban area, there is no pollution around the industry and mining enterprises, and no other pollution sources are found. The ecological environment is very superior. According to the test results of the environmental quality (oil, water, air, products) of Camellia oleifera according to the Zhejiang Institute of Geology and Mineral Resources, the indicators are in line with the requirements of the “Green Food Label Management Measures” promulgated by the China Green Food Development Center, and it is believed that camellia oil The production environment quality and processing water meet the requirements of the national industry standard “Environmental and Technical Conditions for Green Food Producing Area” NY/T391-2000, which is an ideal grade and suitable for the development of pollution-free agricultural products and Grade A green food.

Changshan Camellia Oil Quality Technical Requirements (1) Variety. Cold dew seed, frost seed, and winter seed. (2) Site conditions. Choose an altitude of 800 meters below the slope, 25 degrees below the slope, Yixiang slope and semi-sun slope of the slope town, the slope position should be downhill and mid-slope. The soil should be red soil, acidic to slightly acidic, pH 4.5 to 5.5. The thickness of the soil layer should be 50 to 80 cm or more. (3) Cultivation management. 1. 垦复: After the oil tea enters the fruiting period, it is shallowed once a year at least once, and the weeding soil is dug once in 3 years. 2. High-replacement: For some inferior plants after the forestation, after 2 years of observation and calibration, the superior tree cuttings are used, and the subcutaneous branches and chimeric branches are used to transform. 3. Harvesting: When the fruit of the red-skin type is ripe, the peel is red with yellow, and the green type is white with white. The shells are dark black or yellowish brown, shiny, and the kernels are yellow with yellowish appearance. A suitable harvesting period is completed from 3 days before the fruit ripening period to 7 days after the fruit ripening period. It is strictly forbidden to pick early. It is strictly forbidden to use the branches for fruit. 4. Fruit treatment: After harvesting the fruit, the stacking time should not exceed 5 to 6 days. It should be dehydrated in time, remove the impurities, and enter the warehouse for pressing. (3) Process flow. 1. Roughing: harvesting → stacking → turning sun → shelling → hot frying → milling → steaming → pressing → filtration → tea oil 2. finishing: tea oil → deacidification → water washing → dehydration → decolorization → filtration → deodorization → Winterization → Filtration → Fine Tea Oil → Canned → Gland → Sealing → Labeling → Packing → Inspection → Factory (4) Quality Features. 1. Sensory characteristics: The oil color is clear and elegant, with the inherent odor and taste of Camellia Seed Oil, no odor, clear and transparent. 2. Physical and chemical indicators: refractive index: 1.460 to 1.464, relative density: 0.912 to 0.922, iodine value: 83 to 89, saponification value 193 to 196, unsaponifiable matter ≤ 15, major fatty acid composition: saturated acid 7 to 11, oleic acid 74 to 87, linoleic acid 7 to 14.

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Producers within the scope of protection of Changshan Camellia Oil Geographical Indication Products may apply to the Zhangzhou Entry-Exit Inspection and Quarantine Bureau for the use of the “Special Mark for Geographical Indication Products”, which is approved by the General Administration of Quality Supervision, Inspection and Quarantine.