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北京园林学会的园林树木学组、草坪地被学组在1990年4月至10月间进行了多次活动。四月下旬园林树木学组组织了北京林业大学、市园林科研所等9个单位28位会员进行了一次丁香属植物引种栽培的学术活动。由中国科学院北京植物园臧淑英副研究员介绍了丁
Beijing Institute of Landscape Garden tree group, lawn group was in April 1990 to October in a number of activities. In late April, the Group of Landscape Trees organized 28 members from 9 units including Beijing Forestry University and City Gardens Research Institute to carry out academic activities of introduction and cultivation of Syringa. By the Chinese Academy of Sciences Beijing Botanical Garden Zang Shuying associate researcher introduced Ding