选取当年生半木质化、具腋芽的香椿茎段作为外植体，诱导腋芽萌发，进行芽苗增殖和生根培养。
The new semi-ligneous stem nodes of Toona sinensis with axillary buds was taken as explant cultured in vitro to induce axillary bud sprouting and bud multiplications.
其关键技术是：于幼苗期摘除顶尖，使每单株第一对(或第二对)真叶叶腋间腋芽萌发成长为双茎。
The key to the technique is to remove the terminal bud at seedling stage, so that the axillary buds of the first or the second pair of true leaves become double stem.
在该激素条件下，几乎100%的植株基部3～4节均萌发出腋芽，并有丛生芽形成，长势均匀，芽多，根系发达。
Under this hormone condition, the axillary buds were germinated from the 3~4 nodes of the basic part of almost 100% of the plantlets of A. formosanus Hayata and the clustered shoots were formed.
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