Eucommia is a unique tree in China, and Eucommia is used as a foreign medicine. The history of utilization in China is also very long. "Shen Nong's Herbal Classic" is called "Xin Xinping." From the lumbar spine pain, supplementing the outside, harming the essence, strengthening the bones, strong ambition, except the sun under the itch, urinary effusion. Long-wearing light and old-fashioned. A thought Xian. The valley."

Lingbao Duzhong is produced in Lingbao City, Sanmenxia City, Henan Province. China is the only source of existing Eucommia resources, and Eucommia resources account for more than 99.9% of the world's total. According to Li Shizhen's "Compendium of Materia Medica" quoted Tao Hongjing in the 6th century AD, "The Record of Famous Doctors": "The eucommia grows in the valley and the upper party Hanzhong...". u0026quot;Tao Hongjing Note: u0026quot; Shangyu in Yuzhou, the 虞虢 虞 虞 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 非 豫 豫 豫 豫 豫 豫 豫 豫 豫 豫According to the textual research, there are Nanxun and Beijiao points. Beibei is in the area of ​​Xiaoqinling, Funiu Mountain and Xiong'er Mountain in Sanmenxia, ​​Henan Province, in Yuzhou (now Henan Province) Lingbao, Lushi and other places. Eucommia is a unique tree in China, and Eucommia is used as a foreign medicine. The history of utilization in China is also very long. "Shen Nong's Herbal Classic" is called "Xin Xinping." From the lumbar spine pain, supplementing the outside, harming the essence, strengthening the bones, strong ambition, except the sun under the itch, urinary effusion. Long-wearing light and old-fashioned. A thought Xian. The valley." "Compendium of Materia Medica" records the Eucommia" skin color purple, sweet and slightly sympathetic, its temperature is gentle, Gan Wen can make up; micro-xin can run, so it can enter the liver and kidney." "Materia Medica "It is said that "the focus of the lower focus, non-Duzhong does not make up; the lower focus of the wet, non-Duzhong suffocating; the acid of the ankle, the strong Tianma Duzhong capsule lumbar intervertebral disc, non-Duzhong does not go; the pain of the waist and knee, not the eucommia. The "People's Republic of China Pharmacopoeia" (referred to as "Foreign Pharmacopoeia") in 2005, the Duzhong leaves were included in the trans-type, and confirmed that the green acid is the secondary medicinal ineffective ingredients and content standards of Eucommia ulmoides.

Lingbao Eucommia quality technical requirements (a) soil conditions. The soil is thick and fertile in the middle soil cinnamon soil. (2) Cultivation management. 1. Cultivation of seedlings: Harvesting grafted seedlings from picking plants on excellent planting plants. 2. Seedling planting: Planting in spring soil after thawing, plant spacing 4m × 5m. 3. Fertilization: The amount of organic fertilizer applied per plant of mature trees is applied from 6kg to 8kg of base fertilizer. 4. Integer pruning: Pulling branches in summer, dredging the drooping branches, and cultivating good plant types with ventilation, light transmission and appropriate branches. (3) Picking and processing. 1. Picking time: From May to June each year, the stripping and peeling regeneration technology is adopted. 2. Processing procedures: stripping - sweating - drying and flattening - stripping the outer skin - sub-packaging. (4) Quality characteristics. 1. Sensory features: the coat is brownish gray with shallow longitudinal cracks. To clean the skin, the meat (endothelial) is thick, the thickness is ≥0.43cm, the width is ≥16.5cm, the length is 82.5cm, and the section is white and silky, showing dark purple. 2. Physical and chemical indicators: total flavonoids ≥ 0.4%, chlorogenic acid ≥ 0.15%, genipin citrate ≥ 0.37%, peach leaf coral 甙 ≥ 1.14%, water ≤ 12%.

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The producers within the scope of protection of Lingbao Eucommia Geographical Indication Products may submit an application to the Lingbao Municipal Bureau of Quality and Technical Supervision for the use of the “Special Mark for Geographical Indication Products”, which shall be approved by the General Administration of Quality Supervision, Inspection and Quarantine.