玉兰繁育及促花技术的研究

本文主要对玉兰种子的湿沙层积、播种期、管理措施、植株移栽时间、开花时间作了初步研究。结果表明：种子湿沙层积时间长的不但出苗早且集中，出苗率高；秋播早的出苗好；盖草遮荫措施优于盖草不遮荫和不盖草不遮荫；初冬季节移栽的同晚冬、早春、晚春及未移栽苗这几种情况相比，在生长高度、地径、９─１２月生长量方面，差异大小不一或无明显差异，初冬移栽的发枝数略多；对玉兰实生苗进行适当的多次移栽和高接的方法可促进提早开花及多开花。

ON PROPAGATION AND PROMOTING FLOWERS OF YULAN MAGNOLIA

Moist stratification, seeding time, manage methods, transplantation time and blossom time of Yulan Magnolia have been studied in this paper. The results show that the longer they conduct moist stratification, the earlier and more concentrated they lift, they lift well under early fall seeding. Covering grasses and sunshading are superior to covering grasses and nonsunshading or no covering grasses and nonsunshading. Compared with transplantation in late winter, early spring and late spring or nontransplanting, early winter transplanting has some differences or no obvious ones in growth height, ground diametre and growth amount from Sept.to Dec., only sprouting amount a little more. To Yulan Magnolia seedlings conducted proper transplanting and higher branch grafting can make blossome earlier or more.