粗毛牛膝菊生物学特性及在呼和浩特市的分布

Biological Characteristics and Distribution of Galinsoga quadriradiata in Hohhot

以入侵植物粗毛牛膝菊为研究对象,调查了粗毛牛膝菊在内蒙古呼和浩特市的分布范围及生境类型,分析了其形态特征和物候期。结果表明:在呼和浩特市,粗毛牛膝菊的入侵分布点有67个:四区四县一旗均有分布,其中56个集中分布在四区,占比为83.58%;入侵生境有绿化带、农田、菜园、果园等,且以绿化带居多;粗毛牛膝菊生长周期长(5~11月),结实期长(7~11月),种子发生量大,单株产量为6 122~24 000粒。

Taking Galinsoga quadriradiata as the research object, the distribution range and habitat type in Hohhot, Inner Mongolia has been investigated, and its morphological characteristics and phenological phase has been analyzed. The results show that in Hohhot, there are 64 invasive distribution points of G. quadriradiata distribute in four districts, four counties and one banner, of which 56 distribution points concentrate in four districts, accounting for 82.81%. Invasive habitats include green belts, farmland, vegetable gardens, orchards, and so on. G. quadriradiata has a long growth cycle(May to December) and a long seed setting period(July to November) and a large amount of seeds(6 122-24 000 grains for per plant).