田间对比试验观察表明,两种木香的主要区别在于:土木香幼苗及成年植株的叶柄基部呈紫红色,头状花序伞房状排列,植株最高可达236.2cm,开花初期在6月21～22日。藏木香幼苗及成年植株的叶柄为绿色,头状花序总状排列,植株最高为157.8cm,初花期比土木香迟5天。 Field comparison experiments showed that the main differences between the two types of woody aromas were: the purple-red base of the petiole base of the seedlings and adult plants, and the head-like inflorescences arranged in a corymbose shape, the plants up to 236.2 cm, and the initial stage of flowering was June 21~ On the 22nd. The petiole of the seedlings and adult plants of M. sinensis was green, and the flower heads were arranged in a total shape. The maximum height of the plants was 157.8 cm. The early flowering period was 5 days later than that of the woody aroma.