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(一)采穗圃的概念及经济意义采穗圃是用优树或优良无性系作材料,为生产遗传品质优良的接穗、枝条和根而建立的林木良种繁育场所,它和种子园一起构成良种繁殖的主要形式。随着选优工作的开展,不论是种子园的建立,还是无性系造林,都需要大量的种条。因此,建立采穗圃生产质优量多的种条,是良种繁育工作中一项紧迫的任务。法国和意大利等国家为满足杨树造林的需要,较早地建立了杨树采穗圃。日本柳杉无性系造林已有几百年历史,对建立柳杉采穗圃有较成熟的经验。近年来我国在杨树、
(A) of the concept and economic significance of earplugs Earplugs is a good tree or elite clones as materials for the production of high quality genetic scion, branches and roots of the tree seed breeding sites, which together with the seed orchard The main form of breeding. With the development of excellent work, whether it is the establishment of seed orchard, or clonal afforestation, need a lot of species. Therefore, the establishment of earplugs production quality and quantity of species, is breeding an important task in the work. France and Italy and other countries to meet the needs of poplar afforestation, earlier establishment of poplar sprout garden. Japanese cedar clonal afforestation has been hundreds of years of history, the establishment of cedar spruce garden has a more mature experience. In recent years, China’s poplar,