良种壮苗是林木速生丰产的基本措施之一。在要求五年、十年成材的情况下,提高苗木的生长量和培养苗木正常发育是十分重要的。为了保证速生丰产林的质量,当前有必要通过观察研究育苗、栽植后成活率及其生长以确定各主要树种壮苗的标准。根据林木速生丰产的 Seedling seedling is one of the basic measures of fast growing forest yield. In the request of five years, ten years of success, the growth of nursery stock and nurture the normal development of nursery stock is very important. In order to ensure the quality of fast-growing and high-yielding forest, it is necessary to observe the standards of seedling raising, survival rate after planting and its growth to determine the strong seedling of main tree species. According to the fast-growing trees