Lueyang Eucommia, Shaanxi omnipotent specialty. Lueyang County is the original and suitable area of ​​Eucommia ulmoides. It is the central production area of ​​Eucommia ulmoides. It has a long history of development. The national-level Eucommia Agricultural Standardization Demonstration Zone of Lueyang has passed the acceptance of the National Standardization Management Committee. The color of Eucommia ulmoides is bright and effective. The skin is flat, the skin is less coarse, the section is silvery white and the glue is dense, taupe, the endothelium is bright and purple-brown. The taste is bitter.

Eucommia is documented in many classical medicine books. "Shen Nong's Herbal Classic" refers to its "indications of waist and knee pain, supplementing the middle, benefiting the essence, strengthening the bones and muscles, except the itch under the yin, urinating the rest. Long service, light body and old age." Eucommia ulmoides is a unique Chinese medicine, its medicine It has a long history and has a wide range of applications in the clinic. Up to now, 14 species of Eucommia have been found on the earth, and they have since been extinct in the mainland and Europe. Eucommia ulmoides present in China is the only remaining relict plant of Eucommia ulmoides, which has high economic value and is of great scientific value for studying the evolution of angiosperm systems and the origin of Chinese flora. It has been listed as the rarest plant in the first volume of the Chinese Plant Red Book - Rare and Endangered Plant. Eucommia ulmoides is a valuable nourishing medicinal material in China. It contains very few free amino acids. It contains a small amount of protein, which is a complete protein similar to most foods. It can hydrolyze and detect 8 kinds of amino acids essential to the human body. Eucommia contains 15 kinds of mineral elements, including trace elements such as zinc, copper and iron, and macro elements such as calcium, phosphorus, potassium and magnesium. Modern research Eucommia has the effect of removing body waste, strengthening human body cell metabolism, preventing musculoskeletal aging, balancing human blood pressure, decomposing body cholesterol, reducing body fat, restoring blood vessel elasticity, diuretic heat, broad-spectrum antibacterial, exciting central nervous system, and improving white blood cell pharmacological action. . "Yu Yu Yao Jie" records: "Yigan kidney, nourishing bones, joint joint wetness. Treatment of waist and knee pain, leg and foot restraint." Effect of liver and kidney, strong muscles and strong bones, conditioning Chong Ren, solid meridian. Treatment of kidney yang deficiency caused by low back pain or soreness. The uterus caused by liver qi deficiency is not solid, and the scrotum is wet and itchy. "Shen Nong's Herbal Classic" is listed as the top grade. Lueyang County, Hanzhong City, Shaanxi Province, is located in the southwest of Shaanxi Province, south of the Qinling Mountains, on the banks of the Jialing River, on the western edge of the Hanzhong Basin, at the junction with Gannan City, Gansu Province. It is surrounded by the Qinling Mountains and has a mild climate, which is especially suitable for the growth of various Chinese herbal medicines. It is called by the pharmacologists as “the best ecological environment in the same latitude region on the earth”, and therefore enjoys the reputation of “bio-gene pool”, “species resource pool” and “natural medicine library”. There are 489 species of 143 families of medicinal plants and animals in the county, including 424 seed plants, 19 spore plants, and 46 animal medicinal materials. There are 172 species only purchased by the state. There are 42 kinds of wild Chinese medicinal materials protected by the state, and there are 12 species distributed in the territory of Lueyang. The majority of the people in Lueyang County have always had the traditional habit of planting Chinese herbal medicines, and accumulated a wealth of experience and technical talents, laying the foundation for the production and quality improvement of Lueyang Eucommia.

Lueyang Eucommia quality technical requirements (a) provenance. Eucommia ulmoides Oliv. (2) Site conditions. The soil is brown loam, the soil thickness is u0026gt; 45 cm, the pH is 5.4 to 7.9, and the soil organic matter content is ≥ 1.0%. (3) Cultivation management. 1. Breeding of seedlings: selecting excellent varieties of scion, rootstocks for local annual seedlings grafting seedlings or seedlings with good quality seedlings. 2. Planting: Spring planting (March) or autumn planting (November), planting density ≤ 3330 plants / hectare (planting density: 1.5 × 2m plant spacing). 3. Fertilization: ≥2.5kg of organic fertilizer per plant per year. 4. Tree shape: trunk shape. 5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Harvesting. Harvesting can be started after 15 years of planting. The harvesting period is ≥5 years, and the harvesting time is from late May to early July. (5) Processing. 1. Process: peeling → layer overlap pressing → squeaking and sweating → drying → planing to rough skin → grading → baling packaging. 2. Main technical requirements: (1) squeaking and sweating: put the eucommia bark on the floor, put the board, compact and cover the straw; (2) dry: observe the endothelium changes, wait for the endothelium to become Purple brown, taken out to dry, sun to moisture content ≤ 11%. (6) Quality characteristics. 1. Sensory characteristics: the skin is flat, the skin is less coarse, the section is silver-white, the glue is dense, gray-brown, the endothelium is bright, purple-brown. The taste is bitter. Thickness ≥ 0.5cm. 2. Physical and chemical indicators: rosinol diglucoside ≥ 0.15%, alcohol soluble extract ≥ 11%, moisture ≤ 13%. 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 Lueyang Duzhong's geographical indication products may apply to the Shaanxi Provincial Bureau of Quality and Technical Supervision for the use of “Special Marks for Geographical Indication Products”, which shall be approved by the General Administration of Quality Supervision, Inspection and Quarantine.