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通过对不同年限休闲地、采伐迹地、五年采伐迹地,不同伐桩密度和不同林龄的林地条件下,紫茎泽兰发生情况的实地调查。初步探明,紫茎泽兰种群数量在不同生境条件下的发生动态显著不同。不同年限采伐迹地,只要有母树,林木自然更新,有可能替代控制紫茎泽兰。在留有伐桩的采伐迹地,当伐桩密度达到50株/亩或更大,五年就可达到控制。林木随林龄增加,郁闭度达到0.7时,可以替代控制紫茎泽兰种群。
Field investigation on the occurrence of Eupatorium adenophorum under different years of leisure, deforestation, five years of deforestation, different densities of piles, and different stand ages was conducted. Preliminary proved that the population dynamics of Eupatorium adenophorum under different habitat conditions significantly different. Cuttings of different years, as long as the mother trees, trees naturally updated, there may be alternative to control Eupatorium. In the logging sites where logging is left, the control can be achieved in five years when the density of stumpage reaches 50 plants / mu or more. When the canopy density reached 0.7, the tree could replace the control of Eupatorium adenophorum population.