【摘要】 在广泛收集资料的基础上 ,对营建水曲柳无性系种子园的建设原则、经营方针、目标、建设程序及标准、园址选择、优树搜集和选择、田间配置、嫁接、管理等技术方面进行了探索更多还原

【Abstract】 On the basis of collected data from all sides, a series of problems on establishing clonal seed orchard of Fraxinus manshurica were discussed. Including establishing principle, management policy and goal, procedure and standard, place selection of the seed orchard, and gathering and selection of plus trees, field spacing, grafting and management of the seedling etc.更多还原