菜用香椿,可用种子播种,育苗容易,收效快,但实生苗的品质易退化,使产品香味变淡,不宜采用;根插育苗和根蘖苗分株法,虽然能保持香椿的品质、香味,但香椿根量和自然萌发的根蘖数量有限,只适于零星栽植用;用枝插育苗可克服上述两法缺点,能保纯复壮良种、繁殖系数大,是加快扩大优良品种、防止品质退化的 Vegetable toon, available seeds sowing, seedling easy, fast, but the quality of seedlings easily degenerated, the product flavor fades, should not be used; rooted seedling and root tillering seedling method, although to maintain the quality of Toon, fragrance, However, there are only a limited number of root tillers in Toona sinensis root and natural germination, which can only be used for sporadic planting. The use of branches and seedlings can overcome the shortcomings of the above two methods, and can maintain the rejuvenation of elite varieties with large multiplication coefficient, which is to speed up the expansion of fine varieties and prevent the quality degradation of