Icheon Yam has more than 1,500 years of planting history in Icheon City. The authentic mountain food is a “green wind” from the mountains. It is rich in rare trace elements such as selenium and tellurium. It is sweet and has no side effects. It is medically A commonly used traditional Chinese medicine is also a kind of superior nourishing vegetables and natural health products that people like to eat.

Lichuan Yam quality technical requirements (a) varieties. The yam yam is a local farm variety, white or light red yam. (2) Site conditions. Yellow-brown soil with an altitude of 800 to 1500 m, a pH of 5.5 to 7.0, and a soil thickness greater than 100 cm. (3) Cultivation techniques. 1. Selection of seed potatoes: use yam plants with high starch content and fleshy tenderness, or yam reeds (commonly known as yam nose). 2. Seed preparation: yam reed can be directly planted, if you need to soak seeds, you can choose 100g carbendazim, 15kg water, soak seeds for 15 minutes, air dry, 3 to 4 days after planting; tuber seeding needs to be under the next species Cut into sections from 3 to 5 days, each weighing 30 to 40 g, and spreading for 2 to 3 days. 3. Sowing: The depth of cultivation is not less than 70cm, according to the yam 9000 to 10000/667m2 (mu), the yam stem is 300 to 400kg/667m2 (mu), and the rotation is 3 years. 4. Field management: (1) Insert: Prepare a bracket of 2 to 4 m. When the yam vine is unearthed to about 30 cm, insert the bracket deep into the soil at 1500/667 m2 or so. (2) Weeding: Manual weeding, it is strictly prohibited to use herbicides. (3) Fertilization: Apply the farmyard manure that is cooked, and try to avoid chemical fertilizers. (4) Harvesting. The frost began to harvest after 10 days. (5) Quality characteristics. 1. Sensory characteristics: firm roots, strips slightly curved, elastic, scorpion hairy, epidermis white or light red; length 20 to 40 cm, middle section diameter 2 to 3 cm; planed or broken section, fleshy white There is a milky leaching mucus. 2. Physical and chemical indicators: water ≤ 70%; reducing sugar ≥ 0.2%; protein ≥ 3.0%; starch (based on dry matter) ≥ 9.0%; potassium ≥ 5000mg / kg; calcium ≥ 300mg / kg; 60min viscosity ≥ 21000mpa .s, 5min viscosity ≥ 16000mpa.s. 3. Health and safety indicators: lead ≤0.2mg/kg; arsenic ≤0.5mg/kg; mercury ≤0.01mg/kg; cadmium ≤0.05mg/kg; nitrite ≤4%; sulphur dioxide ≤160mg/kg.

Apply to：
Producers within the scope of protection of Lichuan yam GI products may apply to the Lichuan Quality and Technical Supervision Bureau of Hubei Province for the use of the “Special Mark for Geographical Indication Products”, which is approved by the General Administration of Quality Supervision, Inspection and Quarantine.