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华北紫丁香,又名紫丁香,属木犀科丁香属,其枝叶茂密,花美而香,其嫩叶可代茶,亦可入药,为常见的园林绿化树种。嫁接、插条及压条繁殖方法,使苗木的大量生产受到一定限制,为在短期内培育大量优质苗木,紫丁香播种育苗是一重要途径。一、采种与保存。华北紫丁香种子9月中下旬陆续成熟采收。成熟的蒴杲外杲皮黄白色或将要变成褐色。采后放在阳光下晾晒,待蒴杲干燥后用硬物搓裂外杲皮,收集种子杲皮混合物,去杂后放室内干藏。二、种子处理。华北紫丁香种子在11月未进行处理。用清水浸泡24小时,然后沙藏。种沙比3:1,埋藏深度50～60厘米,沙藏时间150天,即从11月底至翌年4月底。
North China lilac, also known as lilac, is a rhododendron clover, its foliage dense, beautiful flowers and fragrant, its young leaves can be used on behalf of the tea, but also medicine, is a common landscaping species. Grafting, cuttings and battens breeding methods, the mass production of seedlings subject to certain restrictions, in order to cultivate a large number of high-quality nursery stock in the short term, planting lilac seedlings is an important way. First, seed and save. North China lilac seeds mature gradually harvest in late September. Mature capsule 杲 杲 杲 yellowish white or to brown. After harvesting in the sun drying, to be dried after the capsule hard scratch rubbing 外 skin, the mixture of seeds 杲 Pi to go to the complex after the dry storage room. Second, the seed treatment. North China lilac seeds were not processed in November. Soak in water for 24 hours, then sand storage. Sand ratio of 3: 1, buried depth of 50 to 60 cm, sand storage time of 150 days, from the end of November to the end of April the following year.