根据生产需要,我们于1990~1991年对二年生落叶松苗进行摘芽试验。试验地设在舒兰苗圃,选择有样表性的苗床,划出8m~2样方,一半为摘芽代方,另一半为对照,重复3次。摘芽分6月5日、7月15日两次进行,摘掉侧芽只保留一个顶芽。到7月15日时,有的侧芽长达5~8cm,已有2~4cm木质化,必需用剪 According to the production needs, we conducted 1990-2001 on two-year-old larch seedlings sprouting test. Experimentally located in Shulan nursery, select a sample table seedlings, draw 8m ~ 2 quadrats, half for the buds on behalf of the party, the other half for the control, repeated 3 times. Pick buds on June 5, July 15 twice, remove the lateral buds only to retain a top bud. To July 15, some of the side buds up to 5 ~ 8cm, has 2 ~ 4cm lignification, the need to cut