目前,营建落叶松无性系种子园的砧木都选用落叶松幼苗。为探索落叶松种子园早结实、早丰产的途径,在苹果、梨树高接换头的经验启示下,我所于1977年春对落叶松进行了多枝高接换头试验,收效良好。两年来的实践表明,落叶松多枝高接换头,具有简便易行,嫁接成活率高,嫁接时间长等优点,并能矮化树体,在短期内形成树冠结实。 At present, the larch seedlings to build larch clonal seedstock selection of larch seedlings. In order to explore the early fruiting and early yielding ways of Larch Seed Orchard, with the experience of high replacement of apple and pear tree, we conducted a lot of high replacement experiments on the larch in the spring of 1977 with good results. Practice over the past two years shows that many branches of Larch are highly interchangeable, which has the advantages of simple and easy operation, high survival rate of grafting, long grafting time and the like, and can dwarf the tree and form the crown in a short time.