Ji'an Chestnut is a special product of Ji'an City, Jilin Province. Its fruit is thin, fleshy, sweet and soft, and has a good reputation in the market. Ji'an City is a typical mountainous city with “forest-based”. It is known as “Little Jiangnan of Jilin Province” and is a minority in Jilin Province. Several of the counties that can grow chestnuts.

Ji'an chestnut quality technical requirements (a) variety. Near and silver, square seat. (2) Site conditions. The altitude is below 400 meters, the annual average temperature is not lower than 4.5 °C, the annual accumulated temperature above 10 °C is not less than 2700 °C, the frost-free period is not shorter than 125 days, the soil pH is 5.5 to 6.7, and the soil is sandy soil and gravel soil. Loam. (3) Cultivation management. 1. Seedling breeding: use cold-resistant and disease-resistant chestnut seedlings as rootstocks for grafting and breeding. 2. Seedling planting: The planting time is mid-April in spring or late October to early November, and the planting density is ≤830 per hectare. 3. Fertilization management: mainly based on organic fertilizer, assisting the use of inorganic fertilizer, each planting chestnut tree is applied with organic fertilizer ≥25 kg per year. 4. Plastic trim: The tree shape is trunk or happy. The crown is ventilated and permeable by trimming. 5. Harvest: 1/3 of the whole tree is cracked and harvested. Picking by hand or picking on the ground. 6. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. 7. Post-harvest treatment: Select the ventilated cool place to stack the results for 7 to 10 days, stacking thickness ≤ 70 cm. 8. Storage: Store under moisturizing and low temperature (0 ° C to 5 ° C), storage period of no more than 90 days. (4) Quality characteristics. 1. Sensory characteristics: full, reddish brown, fleshy pale yellow, delicate, thin and easy to peel off. 2. Physical and chemical indicators: Variety item single grain weight g water content% total sugar% protein% fat% starch% near and ≥941.0~45.0≥13.5≥4.7≥1.30≥31.6 Silver leaf≥941.0～45.0≥13.5≥4.1≥1.35≥ 32.0 square ≥841.0～45.0≥14.6≥6.5≥1.50≥32.03. 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 Ji'an chestnut geographical indication products may apply to the Ji'an City Quality and Technical Supervision Bureau of Jilin Province 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.