As a traditional food and vegetable combination, the potato is the largest crop in the agricultural industry in Dingbian County, with the widest distribution range and long-term planting crops. The potato is fixed, the skin is thin and tender, the potato shape is neat, the taste is fragrant, and the content of nutrients such as dry matter, starch and protein is high. In recent years, Dingbian County regards the potato industry as a pillar industry for the prosperity of Xing County, comprehensively strengthens the construction of potato bases, actively introduces and promotes fine varieties and advanced applicable technologies, and strives to develop related industries, so that the potato industry can promote the development of county economy and increase farmers. A new and effective way of income.

Dingbian potato quality technical requirements (a) variety. Purple flower white (Kexin No. 1). (2) Site conditions. The main soil types are sandy loam, yellow loess soil, loose soil, soil thickness of more than 1 m, good tillability, pH value of 6.5 8.5, organic matter content ≥ 0.68%. (3) Cultivation techniques. 1. Choosing the ground: Selecting the terrain is high dry, the soil is loose, the soil layer is deep, and the sandy loam soil is easy to drain and the soil is well ventilated. It is not suitable for planting with alfalfa. It is not suitable for rotation with solanaceous crops such as eggplant and tomato, as well as bees and carrots. Suitable for 3 to 5 years of rotation with millet, wheat, corn and bean crops. 2. Seed treatment: use germination and detoxification seed potato, germination shoot 1 cm to 2 cm under suitable temperature conditions, dicing, each piece weight ≥ 25g, including 1 to 2 strong buds, the knife should be disinfected. 3. Sowing: deep turning ≥ 25cm, can be planted from April 20th to the end of May. The planting density is 2,500 to 4,500 plants per mu, with 37,500 to 67,500 plants per hectare. 4. Apply sufficient base fertilizer: 3,000 kg to 4000 kg of farmland fertilizer, 10 kg to 12 kg of pure N fertilizer, 6 kg to 8 kg of pure P2O5 fertilizer, 6 kg to 10 kg of pure K fertilizer, and 1000 kg to 1500 kg of farmland fertilizer for dry land. Fertilizer 6kg to 8kg, pure P2O5 fertilizer 2kg to 4kg, pure K fertilizer 6kg to 8kg.5. Field management: (1) cultivating and weeding. After the seedlings and the bud stage, two cultivating and weeding soils were carried out. (2) Fertilizer and water management. Potatoes are generally used in combination with cultivating and weeding to regulate water supply. Waters with irrigation conditions are generally filled with water before flowering and during expansion of potato tubers. The dry land is mainly combined with cultivating and weeding to do a good job of water storage and salvage. (4) Harvesting. Harvested from late September to early tenth, generally grasped when most of the stems and leaves of the plant turn yellow, the tubers stop expanding, and the stems are dry and contracted to facilitate the tuber separation. It should be done on a sunny day when the soil is dry. Avoid potato block damage when harvesting. (5) Quality characteristics. 1. Sensory features: potato-shaped oval shape, well-balanced, single potato weight 100 grams to 400 grams, shallow and small bud eyes, dry and clean skin, white skin white meat, cooked food, cotton, sweet, sweet, no spicy. 2. Physical and chemical indicators: project index moisture g / 100g) ≤ 79 starch g / 100g) ≥ 14 protein (g / 100g) ≥ 2.20 vitamin C (mg / 100g) ≥ 14 reducing sugar (g / 100g) ≤ 0.63. Safety requirements : Product safety indicators must meet the relevant regulations of the state for similar products.

Apply to：
Producers within the scope of protection of Dingbian potato GI products may apply to the Dingbian County Quality and Technical Supervision Bureau of Shaanxi Province for the use of the “Special Mark for Geographical Indication Products”, which is reviewed by the Shaanxi Provincial Bureau of Quality and Technical Supervision and is subject to the AQSIQ. Announcement approval. The statutory testing agency for Dingbian potato is designated by the Shaanxi Provincial Bureau of Quality and Technical Supervision.