Ginkgo tree is also called ginkgo tree and gongsun tree. Ginkgo biloba is a precious tree species unique to China for greening, ornamental and timber. Ginkgo biloba fruit (Ginkgo biloba) and leaves have extremely high medicinal value. Ginkgo biloba is an ideal tree species for landscaping, "all around" beautification and good mixed farming and intercropping. It is not only a tree species for water conservation and soil conservation, but also a shelter forest and a dangerous isolation tree species; It is not only a long-lived tree species, but also a world-famous pollution-free tree species with few pests and diseases. It is planted all over Yantai City, and the geographical environment, climate and soil quality of Haiyang City are very favorable for ginkgo production.
Haiyang ginkgo has a long history of production. There is an ancient ginkgo tree in Shangshangdu Village of this city, with a height of 25 meters, a DBH of 2.23 meters, a crown width of 27 meters, a crown coverage area of 1 mu and a tree age of more than 600 years. This tree is one of the 24 ancient, old and big trees investigated in Shandong Province. Ginkgo trees are scattered in 20 towns and villages in Haiyang city. In 1990s, the production of Ginkgo biloba was paid attention to, which is one of the main local products. 1996 was designated as "Haiyang thousand mu ginkgo demonstration base" by the Ministry of Forestry, which strengthened the management and development of scattered trees and patch forests. There are more than 2,700 trees in the city, mainly distributed in Houzhuang Village, Shaokuang Village, Qiansha Village and Xiyekou Village, Dazhuang Village in Panshidian Town and Shegezhuang Village in Quanshui Township. Xiaoji Town and Zhuwu Township in the city have become demonstration bases for ginkgo production, and the city has grown to more than 5,000 mu. The main varieties of Ginkgo biloba in Haiyang are "Buddha's Hand", "Tancheng No.5", "Tancheng No.9", "Tancheng 13" and "Tancheng 16". Ginkgo biloba is about 30 yuan per kilogram, and fresh ginkgo leaves are 2 ~ 3 yuan per kilogram.