本试验选取19—41年生九株不同林龄的北美落叶松带叶夏枝进行扦插,插穗置于三种生根基质,并在各个小分区采用间歇喷雾的条件下进行试验。四个月后,有69％生根,各无性系生根成功范围在23—93％之间,但三种生根基质中差异不显著,生根成功与原株林龄无相关性。 In this study, nineteen age-dependent Larix principis-rupprechtii leaves from 19 to 41 years old were selected for cutting. The cuttings were placed on three kinds of rooting medium and tested under the condition of intermittent spraying in each small sub-area. After four months, 69% of the roots were rooted, and the success of each clonal rooting ranged from 23% to 93%. However, there was no significant difference among the three rooting substrates. The success of rooting had no correlation with the original plantation age.