Tolu is used in the name of the town of Ginkgo, so naturally it is necessary to produce ginkgo. Tolle ginkgo, the shape is long oval, the seed is Buddha-like, the seed is full, the seed is full, and the seed nucleus has obvious edges. The kernels are fine, tough, and strong; sweet and sweet, slightly bitter, with a unique aroma of gingko.

It is one of the famous scenic spots in Guizhou Province. It is known as the “Golden Tule? The World of Ancient Ginkgo”. Every autumn, when the ginkgo leaves begin to yellow, the golden pieces attract a large number of tourists from both inside and outside the province to visit and visit, and the ginkgo has become one of the special gifts that tourists must buy. Ginkgo biloba is the oldest plant in the world. It appeared hundreds of millions of years ago. It is the oldest relict plant of the gymnosperm left after the Quaternary glacial movement. The ginkgo, which is still alive, is sparsely scattered and hundreds of The old tree of the old age is rare, and all other plants of the same class are extinct, so Ginkgo has the reputation of living fossil. Ginkgo tree grows slowly and has a very long life. It takes more than 20 years from planting to ginkgo fruit under natural conditions. After 40 years, it can produce a lot of results. Therefore, some people call it "the grandson tree" and have "common seed." The meaning of "Sun De Shi" is the old birthday star in the tree, with ornamental, economic and medicinal value. The content of tortoise ginkgo is very high. In addition to a large amount of starch, protein, fat and sugar, the ginkgo nuts are rich in vitamin C, riboflavin, carotene, calcium, phosphorus, iron and potassium. Trace elements such as magnesium and ginkgolic acid, ginkgo phenol, five-carbon polysaccharide, and sterol, etc., wherein the total flavonol glycosides are greater than 8.0 mg/kg, and ginkgo biloba lactones are greater than 9.0 mg/kg, and It has good medical effects and therapeutic effects for treating cough and asthma, stopping worms, reducing stools, flat wrinkles, protecting blood vessels, increasing blood flow, bringing down, white turbidity and the like. Benefits of eating ginkgo 1. Ginkgo is a food that is both a medicine and a food, and a very popular health food. Appropriate amount of edible ginkgo has the effects of benefiting lung, treating cough and asthma, stopping the worm, reducing the stool, flat wrinkle, protecting the blood vessels, increasing blood flow and the like. 2, modern medical research shows that ginkgo has smooth blood vessels, improve brain function, delay the aging of the elderly brain, enhance memory, treatment of Alzheimer's disease and lack of blood supply to the brain, with anti-aging effect, for elderly friends, the right amount It is very beneficial to eat some ginkgo. 3, ginkgo can also protect the liver, can reduce the occurrence of arrhythmia, can also prevent fatal bronchoconstriction in allergic reactions, can also be used to deal with asthma, transplant rejection, myocardial infarction, stroke, organ protection and Dialysis. 4, In addition, regular consumption of ginkgo also has the benefits of nourishing beauty, expanding microvascular, promoting blood circulation, and prolonging life. It is a health food suitable for both young and old. 5. Flavonoids and bitter lactones in the fruit of the ginkgo have special preventive and therapeutic effects on cerebral thrombosis, senile dementia, hypertension, hyperlipidemia, coronary heart disease, arteriosclerosis, and hypofunction. Chinese medicine believes that the white fruit tastes bitter, warm, and has a small poison; it has the effect of warming the lungs and replenishing qi, setting the asthma, reducing the stool, and stopping the white turbidity. Ginkgo's edible taboos 1. Ginkgo should not be eaten raw, and should not be overdose. Cooked ginkgo can eat up to 4-5 a day. If it exceeds this amount, there will be a certain risk of poisoning. The symptoms of excessive ginkgo poisoning are: nausea, vomiting, abdominal pain, diarrhea, loss of appetite, and then irritability, fear and screaming, gradually weak limbs, and even breathing difficulties, pulmonary edema and coma. Contact with nucleoli and fleshy rind may also cause dermatitis. 2, contact with nucleoli and meaty skin may also cause dermatitis. 3. When the ginkgo is eaten, the green germ in the nut must be removed to avoid contact with the core.

Technical requirements for the quality of Tolle Ginkgo I. Provenance Ginkgo biloba (Ginkgo biloba L.). 2. Site conditions The altitude of the area is 1500m to 2500m, the soil type is yellow brown soil, the soil texture is sandy loam soil, the soil layer thickness is ≥40cm, the soil organic matter content is ≥1.0%, and the pH value is 5.5 to 7.5. Third, cultivation management 1. Seedling breeding: select the motherland in the range of the origin of the mother tree to collect the scion, 3 to 5 years of Ginkgo seedlings as the rootstock grafting seedlings. 2. Colonization: The planting time is from early December to early April. The planting density is ≤700 plants per hectare, and the ratio of male to female plants is ≥50:1. 3. 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 the fruit is turned from yellow to orange or yellow, and harvested when a small amount of natural peeling begins. V. Processing After the harvest, the outer seed coat is removed after 1 week of storage, and the dry, stored or stored in the cold storage is cleaned. Sixth, quality characteristics 1. Sensory characteristics: the outer shell has two edges, white marble or fish belly white, thin and smooth. The nuts are emerald green, the flavor is rich after cooking, the texture is delicate, the toughness and the sputum are good. 2. Physical and chemical indicators: the kernel yield ≥86%, soluble sugar (after one month of harvest) ≥0.8%, protein ≥3.3%, starch ≥32.0%. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers within the production area of ​​Tolle Ginkgo may submit an application to the Panxian Market Supervision Administration for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Guizhou Provincial Bureau of Quality and Technical Supervision and reported to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The testing agency of Tuile Ginkgo is selected by the Guizhou Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.