Xichang is a high-quality vegetable production base in Sichuan Province and the largest onion production area in the province. The climate here is mild, the seasons are like spring, and the light and hot water resources are abundant, which is very suitable for onion growth. Xichang onion is mainly produced in 20 townships (towns) such as Anning Town. Due to its long history of cultivation, high quality and early market time, Xichang Onion has high reputation in all parts of the country and Japan, Russia and other countries, and has a stable market share. The onion produced under the superior natural environment of Xichang has the characteristics of fresh color, strong flavor, large fruit, storage resistance, transport resistance, tender meat, tight structure, rich smell and crispy taste. It is loved by consumers. . Xichang onion is rich in 17 kinds of amino acids, vitamin C, trace element selenium and other nutrients.

Xichang is the “hometown of Chinese onions”. The onion taste is more authentic than ordinary onions, so it is popular in domestic and foreign markets. “Xichang Onion” won the gold medal in the Agricultural Expo, and 11 products such as “Xichang Onion” and “Xichang Garlic” were certified as Green Food A-level mark. Onion Town is the main production base. “Yuecheng” Xichang City, located in the southwestern part of Sichuan Province, has a beautiful sunshine and unique style, which not only attracts tourists from outside, but also provides a good natural resource condition for local crops. Xichang onion has a long history of planting, and the whole plant has a special smell. The stimulating taste of the bulb is especially strong. The edible part of the onion is the large scale leaf of the underground bulb (the onion), the meat is tender, the juice is spicy and the quality is good. Suitable for raw food. It can also be used as an accessory to add flavor to the dishes. Nutritional value onion has the function of divergent cold; can stimulate the secretion of stomach, intestines and digestive glands, increase appetite, promote digestion; lower blood pressure and blood sugar, prevent thrombosis; have a certain refreshing effect, contain a kind of inflammation "quercein" 9 The substance, which is one of the most effective natural anticancer substances known at present; the trace element selenium contained is a strong antioxidant, which can eliminate free radicals in the body, enhance cell viability and metabolism, and has anti-oxidation Cancer anti-aging effect; can improve bone density, help to prevent osteoporosis; contains phytoncide such as allicin, and thus has a strong bactericidal ability. Chewing raw onions can prevent colds. Modern medical science verifies that onions are also alkaline vegetables that people often say. Eating onions often protects against disease and delays aging.

Xichang onion quality technical requirements (a) varieties. Purple skin type variety. (2) Site conditions. The soil type is purple alluvial soil, sandy soil, soil organic matter ≥1.8%, soil pH 6.5 to 6.9. (3) Cultivation management. 1. Seeding and seedling: planting from late August to early September, the seeding density is 3.75 g/m2 to 7.50 g/m2, and the sowing method is spreading. 2. Colonization: seedling age is 50 days, and 3 to 5 leaves of onion seedlings are transplanted. The planting time is from October 1st to October 30th. The planting density is ≤300,000 plants/hm2, and the planting depth is 3cm, covered with black plastic film. 3. Water and fertilizer management: Apply organic fertilizer ≥22500kg/hm2. Stop watering 7 days before harvest. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Harvesting. Harvested from late March to late May. The pseudo stems are lodging, the leaves begin to wither, and the outer scales are harvested when they are leathery. The film was uncovered 10 days before harvest, harvested on a sunny day, and air-dried in the field for 1 day. (5) Quality characteristics. 1. Sensory characteristics: The shape of the bulb is oblate to round, the color is purple, the skin is smooth, the gloss is good, the structure is tight, and the spicy taste is strong. 2. Physical and chemical indicators: water ≤ 90%, soluble total sugar ≥ 4.0%, protein ≥ 1.0%, crude fiber ≤ 0.53%. 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 Xichang Onion Geographical Indication Products may submit an application for the use of “Special Marks for Geographical Indication Products” to the Quality and Technical Supervision Bureau of Xichang City, Sichuan Province, which is reviewed by the Sichuan Provincial Bureau of Quality and Technical Supervision and announced by the General Administration of Quality Supervision, Inspection and Quarantine. Approved. The statutory testing agency for Xichang Onion is designated by the Sichuan Provincial Bureau of Quality and Technical Supervision.