Abstract: This paper present a species of extraneous weed that is native tO the Andes of the south America. Now, it has become the wide distribution in low altitude region of the southern Yunnan. According to data and investigation, we know that Eupatorium odoratum has extended from thailand through Burma to the southern Yunnan since 1930. Moreover, in these areas it can be set foot, the wide-spread, naturalized, and often formed a secondary consociation, has directly connection with temperature.

Key words: primary, eupatorium, odoratum, community, Yunnan

摘要： 本文介绍了原产南美安底斯山的飞机草(Eupatorium odoratum L.)，现已成为滇南低海拔地区一种外来的广布杂草.根据文献资料和访问傣族老人,本草大约本世纪卅年代从泰国经缅甸传入云南和海南,包括广东西南部,广西南部沿海,并在这些地区立足、蔓延、归化、形成次生单优种群落.这跟我国南部具有湿热的环境,以及它本身特有的生态生物学特性密切有关.从生态生物学特性看:飞机草属半灌木,具较广的生态幅,喜光而不耐荫,生长迅速,种于产量大而每粒则轻,萌生及分蘖力强,根系浅而根幅大等．

关键词: 滇南, 飞机草, 群落, 研究