紫茎泽兰于60年代中期逐步由云南省的东北部传入我省,近年发现在六盘水市正迅速扩展蔓延,所到之处成片生长,很快成为当地杂草的优势种群。据调查,我市以盘县特区分布面最广,面积之大,已遍及整个特区17个区镇,六枝特区除新华、新场两区未发现外,其余区镇都有分布,水城县分布已达5个区。紫茎泽兰大多生长在路旁、水沟旁、山坡、荒地以及田间周围。也在庭院、宅旁、果园及菜园附近发现。在一般条件下紫茎泽兰株高1m 左右,但在排水沟、河堤及低洼潮湿地段,生长更茂盛,植株可达2m 多高。紫茎泽兰在我市分布在海拔770～1900m 之间,以1000～ Eupatorium adenophorum in the mid-60s from Yunnan Province, the northeast into our province, found in recent years in Liupanshui city is rapidly expanding its spread, where the film into pieces, and soon became the dominant species of local weeds. According to the survey, the Panzhihua Special Economic Zone in our city is the most widely distributed and large in area. It has spread to 17 districts and districts throughout the SAR. Except for Xinhua and Xinchang in the six branch special districts, the remaining districts and towns have been distributed. Shuicheng County Distribution has reached 5 area. Eupatorium mostly grows on the side of the road, beside ditches, hillsides, wasteland, and fields. Also found in courtyards, homesteads, orchards and vegetable gardens. Under normal conditions, Eupatorium adenophorum plant height of about 1m, but in the drainage ditches, embankments and low-lying wet areas, more flourishing, plants up to 2m high. Eupatorium adenophorum distribution in the city at an altitude of 770 ~ 1900m, with 1000 ~