The ginkgo tree is also known as the ginkgo tree. In ancient times, it was also known as the duck-foot tree or Gongsun tree. It is one of the most precious tree species in the world. It is the only species of ancient ginkgo plants that survived on the earth. Therefore, botanists regard it as a "living fossil" in the plant world, and is closely related to cedar, Araucaria, and golden pine. Together, they are known as the four major garden trees in the world. Chinese horticulturalists often compare ginkgo to peonies and orchids, calling it the "Three Garden Treasures" and revering it as a national tree.
The Ginkgo tree is a tall deciduous tree with a tall trunk and graceful shape. It has strong resistance to disease and pollution, and has a long life span of up to thousands of years. It is loved and favored by the world for its vigorous physique, unique character, unique character, high ornamental value and economic value. Wang Wei, a famous poet of the Tang Dynasty, once wrote a poem and said: "Ginkgo trees are planted as beams, lemongrass knots are made of clouds, and I don't know the clouds in the building, so they are like rain on earth." Su Dongpo, a great poet in the Song Dynasty, wrote a poem praising: "The mountains are surrounded by peaks and mountains, and the eyes are full of beauty and picturesqueness. A tree holds up the sky, surrounded by small circles of articles." The ginkgo tree not only has high ornamental value for its tall and handsome appearance, exquisite and unique leaves, but also has strong adaptability, great medicinal effects, and considerable economic value. The fruit of the ginkgo tree, ginkgo, has a sweet taste and is good for both medicine and food. After processing, it can be made into various flavored drinks and health foods suitable for all ages with bright colors, strong smell, sweetness and deliciousness. The roots, leaves, and bark of Ginkgo also contain a variety of medicinal ingredients, which have high clinical application value.
According to research, Ginkgo originated in the Carboniferous Period (345 million years ago), Ginkgo orders originated before the Permian Period (250 million years ago), and the genus Ginkgo originated 190 million years ago. Early Jurassic Period. The history of the existing ginkgo can be traced back to the Paleocene Epoch (early Tertiary Period) 70 million years ago. In the late Cretaceous and the Tertiary Period of the Cenozoic, ginkgo gradually declined from prosperity to decline. After the Quaternary Glacier, all ginkgo species in Central Europe and North America became extinct, with only one species preserved in my country. The value of Ginkgo lies not only in its ability to survive across "historic time", but more importantly in its ability to maintain the genetic stability of the species during this long "geological time".