银杏叶的采收方法银杏叶含有银杏内脂、银杏黄酮等多种药用成分，具有治疗老年痴呆及及血栓等血管系统疾病的功效。近年来，银否叶及其提取物在国内外很畅销，合理采收银杏叶可获得很好的经济效益。什么时候采叶才能做到既不损伤树体，又能深持叶片内的有效成分呢？一般银... Ginkgo biloba harvesting methods Ginkgo biloba contains ginkgolides, ginkgo flavonoids and other medicinal ingredients, with the treatment of senile dementia and thrombosis and other vascular diseases. In recent years, silver leaf and its extract are very popular at home and abroad, reasonable harvest Ginkgo biloba can get very good economic benefits. When the leaves can be harvested without damage to the tree, but also deep in the leaves of the active ingredients it? General silver ...