T/CQGFA 03-2004 Technical Specifications for the Production of Organic Coptis chinensis

Scope

Main Technical Content: 4. Site Environment 4.1 Climate: The planting area is located in the mid-high mountainous regions with altitudes of 1,000–1,800 meters, featuring rich vegetation. The daily average temperature ranges from 5°C to 22°C, with an annual average temperature of 10°C and a relative humidity of 80%–90%. 4.2 Ambient Air Quality: The ambient air quality should meet the requirements of GB 3095. 4.3 Irrigation Water: The irrigation water quality should comply with GB 5084. 4.4 Soil: The soil should meet the requirements of GB 15618, with purple soil, yellow-brown soil, or humic loam. It should be loose, well-ventilated, rich in organic matter, and have a soil layer thickness of no less than 20 cm, with a pH value of 4.6–7.5. 5. Planting 5.1 Seed Selection: The seed source should be Coptis chinensis Franch., a plant from the Ranunculaceae family. Select healthy plants with multiple buds, thick leaves, and no pests or diseases. Use plants aged 4–5 years after transplantation as the seed source. 5.2 Seed Collection: Around the Summer Solstice, collect the fruit of Coptis chinensis Franch. on a clear day. Spread the seeds in a cool, dry place indoors for 2–3 days. When the seeds crack open, rub and shake them to remove impurities. Mix the seeds with sand at a ratio of 1:5–10 and store them using either the stacked layering method or the pit storage method. 5.3 Seedling Cultivation 5.3.1 Site Selection: Choose a sheltered, shaded mountainous area or a semi-shaded area with short sun exposure, with fertile soil, a deep layer of humus, and good drainage on mountain slopes, foot slopes, or terraces. The slope should not exceed 20°. 5.3.2 Land Preparation: From October to November, remove surface debris, dig and loosen the soil, level the area, and spread 400–500 kg of composted manure per 667 m2. Mix with topsoil and cover with 5–7.5 cm of mulch. 5.3.3 Shade Shelter: Provide 80%–85% shading. 5.3.4 Sowing: From December to January, sprea

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