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牡丹目前主要采用分株、壅土压条、嫁接等方法繁殖。前两种方法繁殖系数低,难以大面积推广,而嫁接又成本较高,工作量大。笔者近年来利用牡丹大量的当年生嫩枝及根部萌枝进行了高空吊包试验,使繁殖系数大大提高,且发根快,苗矮而壮(见照片),适宜盆栽,颇具观赏价值。具体方法是: 一、育苗时间育苗枝条必须老嫩适宜。太嫩易折断,且不易整齐地环剥,会产生腐烂;太老又发根慢,甚至当年仅长出愈伤组织而不发根,继续培育成活率也很低。因此,选择育苗时间,一般以6月上中旬效果最好,即当地花谢后30—40天时。
At present, peony is mainly used for ramets, riparian soil pressing, grafting and other breeding methods. The first two methods of low coefficient of multiplication, difficult to promote large-scale, and grafting and higher cost, heavy workload. In recent years, the author made use of a large number of annual peonies and root shoots of peonies to carry out experiments on high-altitude pendants, so that the propagation coefficient is greatly increased, and the hairy roots and young shoots are short and strong (see photos). The specific method is: First, nursery seedling shoots must be suitable for young and tender. Too tender and easy to break, and not easy to neatly girdle, will produce decay; too old and slow hair roots, and even then only callus grow without hair roots, continue to raise the survival rate is also very low. Therefore, the choice of nursery time, usually in June on the best results, that is, 30-40 days after the local flower Xie time.