Quzhou ginkgo quality technical requirements (a) variety. Horse bell varieties. (2) Site conditions. The soil type is brown fluvo-aquic soil, the texture is sandy loam, the soil organic matter content is ≥1.2%, and the soil pH is 6 to 7.5. (3) Cultivation management. 1. Seedling breeding: The scion is collected from the superior plant mother tree of each species in the good seed garden, and the local ginkgo seedlings are used as rootstocks for grafting and breeding. 2. Planting: The time is from early March to early April, the planting density is ≤825 plants/ha, and there are no less than one pollinating male plants per 8 female plants. 3. Fertilization: Adult plants with organic fertilizer ≥ 50kg per year. 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. When the seed is fully mature (the outer seed coat is yellow, the seed is soft, and the outer white powder is more). (5) Real processing and processing. The mature seed is removed from the outer seed coat by stacking, and the stacking height is 30cm to 80cm, and it is sold or stored after being dried. (6) Quality characteristics. 1. Sensory features: The shell is smooth and white with luster. After the nuts are cooked, the texture is fine, with toughness, good scent, strong aroma, and a slightly sweet aftertaste. 2. Physical and chemical indicators: single grain weight ≥ 3.4g, kernel yield ≥ 78%. Amylopectin ≥ 52%. 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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The producers of the Yinzhou Ginkgo geographical indication product protection production area may submit an application to the Quality and Technical Supervision Bureau of Zhangzhou City, Jiangsu Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Jiangsu Provincial Bureau of Quality and Technical Supervision and announced by the General Administration of Quality Supervision, Inspection and Quarantine. Approved. The statutory testing agency of Yinzhou Ginkgo is designated by Jiangsu Quality and Technical Supervision Bureau.