日本五针松是珍贵的庭园绿化观赏树种。但因其开花结实不正常,往往形成瘪粒,产种极少,目前主要采用嫁接法进行繁殖。 据资料介绍此树种用种子繁殖也较困难,需要进行变温处理,播种后半年(最少也需两个月)方能出苗。究其原因,我们认为,该种子皮厚且非常坚实,水分和氧气很难渗入,因而不易发芽出苗。据此,我们进行了破壳育苗的试验,经6天就出了苗。缩短了育苗周期,保证了有限种子的利用率,提高了经济效益。现将此法简介如下。 Japanese Pinus pinaster is precious ornamental tree species. But because of its flowering and fruiting is not normal, often form a deflated tablets, very few species, the current method of grafting mainly for breeding. According to the introduction of information, it is more difficult to propagate this species with seeds, and it needs to be changed in temperature. After six months (at least two months) after sowing, it can emerge. The reason, we believe that the seed coat thick and very solid, moisture and oxygen is difficult to penetrate, so difficult to sprout emergence. Accordingly, we conducted a test of breaking shell nursery, after 6 days out of the seedlings. Shorten the breeding cycle, to ensure the utilization of limited seeds, improve economic efficiency. Now this method is as follows.