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用 ２５、５０、１００ｕｇ／ｇ 的 Ａ Ｂ Ｔ 生根粉３ 号浸泡华北落叶松苗木根系４ｈ 后造林，结果表明，生根粉在华北落叶松造林中效果明显，用５０ｕｇ／ｇ 生根粉浸根可使造林成活率提高１０ 个百分点，用 ２５ｕｇ／ｇ 浸根可使苗木生物量、苗高和地径分别提高３８．２％ 、７．３％ 和１８．８％ 。
Roots of Larix principis-rupprechtii were inoculated with 25, 50 and 100ug / g of ABT rooting powder 3 for 4h. The results showed that the rooting powder was effective in afforestation of Larix principis-rupprechtii. The survival rate of afforestation increased by 10 percentage points. With 25ug / g immersion root, seedling biomass, seedling height and diameter increased by 38.2%, 7.3% and 18.8% respectively.