论文部分内容阅读
嫁接也是树木营养繁殖——即无性繁殖的一种方法。采用这种方法的基本手段是:选取一个植株上的枝或芽,嫁接到另一植株的干茎或根上,使两者相互愈合成活,形成新的植株。这样接在上面的枝或芽,通常称为“接穗”,承受接穗的部分,称为“砧木”。通过嫁接培养成的苗木,称为“嫁接苗”。 一、嫁接繁殖的意义 (一)嫁接繁殖能保持树木母本的优良特性,培育新的优良品系,长期保持杂种优势。在针阔叶树种的育苗上,许多都需要通过嫁接方法培育优株壮苗,例如:红松、落叶松、银杏、杨类、栗树、榆、楸树以及多种果树类。在生产中,常采用嫁接技术培育和繁殖杨、榆等树种的优良品系,例如:在
Grafting is also a tree vegetative propagation - a method of vegetative propagation. The basic method to adopt this method is to select the branch or bud on one plant, graft on the stem or root of the other plant, and make the two heal each other to form a new plant. The branches or shoots that follow this way, often referred to as “scions,” bear the scions, called “rootstocks.” Grafted nursery stock through grafting, known as “grafted seedlings.” First, the significance of grafting (a) grafting Breeding can maintain the excellent characteristics of the tree female parent, cultivate new elite lines, long-term to maintain the heterosis. In the coniferous and broadleaf tree nurseries, many need to cultivate superior seedlings by grafting methods, such as: pine, larch, ginkgo, Yang, chestnut, elm, Catalpa bungei, and a variety of fruit trees. In production, grafting techniques are commonly used to breed and breed good strains of poplar, elm and other tree species, for example: