Ginkgo biloba is a kind of hi-light tree species with deep roots and wide adaptability to climate and soil. It can grow in areas with high temperature and rain, low rainfall and cold winter, but it grows slowly or badly; it can be born in acidic soil (pH 4.5), calcareous Soil (pH 8) and neutral soil, but not salt-alkaline soil and wet soil. Born at an altitude of 1000 (1500-2000) in Yunnan, the climate is warm and humid, with an annual precipitation of 700-1500 mm. The areas with deep soil, fertile and humid, well-drained areas are peacefully coexisting in the soil. Excessively humid places on the stone slopes are not too late to survive or grow poorly.
Ginkgo is rich in nutrients, containing crude fat 2.16%, starch 62.4%, sucrose 5.2%, reducing sugar 1.1%, nuclear protein 0.26%, mineral 3%, crude fiber 1.2%, and vitamin C, riboflavin, carotene, and more. Amino acids, etc., have a high edible value.
In addition to active ingredients, Ginkgo biloba contains a variety of nutrients, especially protein, sugar, vitamin C, vitamin E, carotene, carotenoids, anthocyanins and other rich in content. On a dry basis, the leaf contains protein 10.9% to 15.5%, total sugar 7.5% to 8.7%, reducing sugar 4.6% to 5.6%, vitamin C66.8 to 129.2 mg/100g, vitamin E6.17 to 8.05 mg/100g. . Further, it contains 17 kinds of amino acids, ginkgo alcohol (10-nonanadecanol), ginkgo ketone, octadecyl alcohol, β-sitosterol, stigmasterol, alkaloids and the like. Trace elements include Fe, Cu, Mn, Zn and the major elements Ca, Mg, and the like.