一、试验目的:杜仲是我国特种经济树木之一,树叶树皮种子均可提制硬性橡胶,木材也很好。南京林业科学研究所(包括前身华东农科所森林系)从1953年起,即开始进行杜仲育苗造林技术的研究改进工作。1958年的杜仲造林试验,其主要目的是在1953-1957年杜仲栽植试验的基础上,应用全国各地杜仲种子育成苗木,通过切干与不切干两种处理,在南京地区进行造林试验,经过肥培管理,比较观察其生长发育情况,作为改进造林技术和促使 First, the purpose of the experiment: Eucommia is one of China’s special economic trees, bark seeds can be made of hard rubber, wood is also very good. Nanjing Forestry Research Institute (including the predecessor of East China Institute of Agronomy) from 1953 onwards, that began Eucommia seedling afforestation technology research and improvement work. The main purpose of 1958 Eucommia afforestation experiment was based on the experiment of planting Eucommia between 1953 and 1957, applying the Eucommia seed from all over the country to nurture the seedling. After cutting and not cutting, the afforestation experiment was conducted in Nanjing, , Comparative observation of its growth and development, as improved afforestation technology and promote