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一、林木繁殖方法 林木繁殖方法分有性繁殖和无性繁殖两种。有性繁殖的优点是方法简单,成本低,木材后期生长速度快,尖削度小,能获得优质木材。缺点是树木前期生长速度慢,最重要的是经过异花授粉以后,用种子繁殖的实生苗,容易发生遗传变异,往往不能保持原来母树的优良品质。特别是以采取果实种子为目的的经济林如油橄榄、油茶和各种果树,多不采取有性繁殖(杂交育种例外)。无性繁殖有嫁接、扦插、压条、分根等多种方法。但大量采用的以前面二种为多。另外还有一种有性繁殖和无性繁殖相结合的方法,即在优良母树上采取接穗,嫁接在种子园的砧木上,
First, the tree breeding methods Forest breeding methods divided into sexual reproduction and asexual reproduction of two. The advantage of sexual reproduction is the simple method, low cost, fast growth rate of late wood, small taper, access to high-quality wood. The disadvantage is the slow growth of early trees, the most important thing is that after cross-pollination, seedling propagation of seedlings prone to genetic variation, often can not maintain the original good quality of the mother tree. In particular, economic forests, such as olive oil, camellia and various fruit trees for the purpose of taking the seeds of fruit, often do not adopt sexual breeding (except hybrid breeding). Asexual reproduction grafting, cutting, battens, root and other methods. However, a large number of used to more than the previous two. There is also a sexual reproduction and asexual reproduction of a combination of methods, that is, to take a good mother tree scion, grafted on the root of the seed orchard,