大丽花一般用带芽块根分株栽植,且颈顶必须完好。颈部以下的肥大块根是贮藏器官,上面没有节痕和芽眼就不能发芽,再肥大的块根若失去颈顶就成了废物。在挖掘、运输、贮藏、分切时常会出现断颈块根,通常的做法就是抛弃不用。这几年我用它做砧木嫁接,变废为宝,嫁接的比扦插苗长势更好(图1、图2)用此法把优良品种疏理下来的芽嫁接在普通品种的块根上,在发展优良品种方面也起到了一定的作用。 Dahlia generally planted with buds root ramets, and the top of the neck must be intact. Below the neck, the hypertrophy root is a storage organ where germ does not germinate without a nodal mark or bud eye, and then the hypertrophic root tuber becomes waste if it loses its neck top. In excavation, transportation, storage, cutting often appear broken necks roots, the usual practice is to abandon without. In recent years, I use it as stock grafting, turning waste into treasure, grafting better than cuttings growing (Figure 1, Figure 2) This method to fine varieties of grafted buds grafted on the roots of ordinary varieties in the Development of fine varieties also played a role.