刺楸一年生播种苗的年生长规律及育苗技术要点邹学忠，周福兴，阎忠林，刘清田，吕长波（辽宁省林业科学研究院）刺揪是我国东北地区优良的珍贵阔叶树种，为培育刺揪的优质壮苗，经试验得知，ｌ年生播种苗的生长可划分为：出苗期、幼苗期、速生期和生长后期。并根据各时期... Year-old planted seedlings of Catalpa bungei, annual growth and breeding techniques Zou Xuezhong, Zhou Fuxing, Yan Zhonglin, Liu Qingtian, Lv Changbo (Liaoning Academy of Forestry Research Institute) Sting is Northeast China excellent fine broadleaf tree species, Strong seedlings, the experiment that l-year-old sowing seedling growth can be divided into: the emergence, seedling, fast-growing and late growth. And according to each period ...