【摘要】 以亚美马褂木优良品种为对象,采穗圃当年生穗条作插穗，研究了扦插季节、基质、植物生长调节剂等对生根的影响。研究结果表明：（1）不同季节扦插生根率显著不同，夏季扦插生根率最高为57.3%，其次是秋季扦插（40.3%），生根率最低是春季扦插（24.7%）。（2）不同扦插基质生根率差异极显著，珍珠岩+蛭石+河沙（1∶1∶1）为基质的生根率最高为65.1%，其次为蛭石+河沙（1∶1）(59.6%)、珍珠岩+河沙（1∶1）(52.3%)、河沙（51.9%）、泥炭土（40.3%）、黄土（33.5%）。（3）ABT1号、GGR7号、911、NAA、IBA等5种植物生长调节剂对扦插生根率具有极显著的影响，从植物生长调节剂整体效果来看ABT1号>NAA>GGR7号>IBA>911；处理时间的效果是1h>3h>10s>6h。1000 mg·L-1 ABT1号处理1h生根率最高达88.8%。更多还原

【Abstract】 The excellent varieties of Liriodendron sino-americanum were selected as the study object, the cuttings of the current year in the cutting orchard were used as the cuttage, and the effects of cutting season, substrate and plant growth regulators on rooting of Liriodendron sino-americanum were studied. The results showed that:（1） The rooting rate of cuttage varied significantly in different seasons, with the highest rooting rate being 57.3% in summer, followed by autumn（40.3%） and spring（24.7%）.（2） There were significant differences in rooting rates among different cutting media. The rooting rate of perlite+vermiculite+river sand（1∶1∶1） was the highest（65.1%）, followed by vermiculite+river sand（1∶1）（59.6%）, perlite+river sand（1∶1）（52.3%）, river sand（51.9%）, peat soil（40.3%） and loess（33.5%）.（3） Five kinds of plant growth regulators, such as ABT1, GGR7, 911, NAA and IBA, had very significant effects on cutting rooting rate. Based on the overall effect of plant growth regulators, ABT1 > NAA>GGR7> IBA>911, and the effect of treatment time was 1 h>3 h>10 s>6 h. The highest rooting rate was 88.8% when treated with ABT1 1000 mg·L^-1for 1 h.更多还原