银杏生产开发：希望与困惑并存曹云开一代诗风的郭沫若曾说过，白果树（即银杏）是中国的国树。银杏不仅原产于我国，其历史悠久达千年以上，而且它还是集果用、叶用、材用、观赏、防护于一体的一种极具综合效益的树种。因此，银杏的生产与开发正成为一个日趋热门的话题，... Ginkgo production and development: the hope and confusion coexist Cao Yun opened a generation of poetry Guo Moruo once said that ginkgo (ginkgo) is China’s national tree. Ginkgo not only native to China, its long history of more than a thousand years, but it is also set with fruit, leaves with wood, ornamental, protection in one of the most comprehensive and effective species. Therefore, the production and development of ginkgo is becoming an increasingly popular topic, ...