嫁接杜仲增加效益杜仲雌雄异株，一般１０年左右才开花结实。据我们在各点观察，雌株长势略胜于雄株，且数量上都是雄株多于雌株。在历史上杜仲仅作中药材，随着保健饮（食）品，高档饲料等方面的深人开发，特别是中国科学院化学所严瑞方先生，成功地解决了杜仲胶硫化难题... Grafting Eucommia increased effectiveness Eucommia dioecious, usually about 10 years before flowering. According to our observation at each point, the growth of female plants is slightly better than male plants, and the number of male plants is more than that of female plants. In the history of Eucommia only for Chinese herbal medicines, with health drink (food) products, high-grade feed and other aspects of the in-depth development, especially the Chinese Academy of Sciences, Mr. Yan Ruifang, successfully solve the Eucommia curing problems ...