一、前言侧柏(Biota orientalis)是我国华北地区的主要常绿树种之一,适应性强,分布广,繁殖容易,又能耐砂荒瘠薄之地,是我国水土保持林和防风固砂林的主要树种之一。侧柏木材坚硬,耐用及具有香味等特点,是我国人民很早以来所喜爱的主要用材树种之一。其最大缺点是生长太慢,因而近几年来对侧柏之育苗造林很少提倡。目前随着我国园林化运动之发展,它已成为一个不可缺少的重要绿化树种。因此侧柏育苗亦将随之得到发展。 I. Introduction Biota orientalis is one of the major evergreen species in North China. It has many advantages such as adaptability, wide distribution, easy propagation, and poor barrenness. It is one of the most important species of soil and water conservation forests in China One of the main tree species. Oriental arborvitae wood is hard, durable and fragrant, and is one of the main timber species loved by our people since long ago. Its biggest drawback is the growth is too slow, so in recent years the arborvitae afforestation rarely advocated. At present, with the development of the garden movement in our country, it has become an indispensable and important green tree species. Therefore, Platycladus nursery will also be developed.