Ginkgo biloba is a natural wild special in Huixian County. The fruit is small, and the outer peel is golden yellow like kumquat. The seed nucleus is nearly round or elliptical. The fresh seed nucleus is white marble or fish belly white. If it is a plate, Xiao Ruomei nuclear, welcome Looking at the light, it looks like a white pearl. The shell is thicker, the flesh is thick and tender, the juice is full, and there is no smell. After processing, the yellow and yellow are transparent, the texture is fine, the entrance is soft and delicate, fresh and sweet, the tendons are elastic, and the aftertaste is slightly bitter. It is favored by consumers because of its rich nutrition, delicious taste, low embryogenic rate, high germination rate and high quality.

Technical requirements for quality of ginkgo in Huixian County 1. Variety of ginkgo varieties such as horse bells, round seeds and plum kernels. Second, the site conditions range from 800m to 1200m above sea level, the soil type is brown soil or brown soil, the soil organic matter content is ≥1.0%, and the pH value is 6.2 to 7.8. 3. Cultivation and Management 1. Seedling Breeding: The scion is collected from the maternal tree of the varieties of the good seed garden, and the ginkgo seedlings are used as rootstocks for 3 to 5 years, grafting and breeding. 2. Colonization: The time is at the end of autumn and winter (before the soil is not frozen) or spring from March to April, the planting density is ≤ 705 plants / hectare, and the pollination male plants are arranged according to 2% to 3%. 3. Fertilization: Adult trees with mature organic fertilizer ≥45kg 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 from September to October, the outer seed coat of apricot fruit is turned from yellow to orange or yellow, and harvested when a small amount of natural peeling begins. V. Seed processing After removing the seed coat for one week after harvesting, the outer seed coat is removed, and the dry, sealed or cold storage is stored. Sixth, the quality characteristics 1. Sensory characteristics: the shell is white marble or fish belly white, shiny. After the nuts are cooked, the texture is delicate, with toughness and sputum. The taste is sweet, sweet and slightly bitter. 2. Physical and chemical indicators: single grain weight ≥ 1.5g, kernel yield ≥ 76%. The nuclear rate of the nucleus is ≥88%. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the ginkgo production area of ​​Huixian County may apply to the Quality and Technical Supervision Bureau of Huixian County of Gansu Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Gansu Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The testing institution of Yinxian Ginkgo is selected by the Gansu Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.