豫东农区外来入侵植物及其防控

豫东农区外来入侵植物共计26种,隶属于14科23属,全部为草本,大部分原产美洲和欧洲.它们通过多种途径传入本地,但多数是伴随人类活动而来,其自身强大的繁殖能力、生态适应能力和传播能力以及本地自然环境条件的适宜性等使其能够在本地区自然繁衍和扩散而最终成为侵入者.外来入侵植物给本区的农业生产和生态环境带来了一定的危害.危害较大的种类是皱果苋、反枝苋、刺苋、杂配藜、臭荠、王不留行、小白酒草、野塘蒿和牛筋草等.在采用多种措施进行防控的同时,还应注意积极利用.

Invasive alien plants and control in the farming region of Yudong

This paper discusses the invasive,alien plants in farming region of the eastern part of Henan province(Yudong) based on investigating and referring to the related literatures,including their composition of flora,mechanism of invasion,harm,prevention and control,and so on.It is discovered that there are 26 species of invasive alien plant in the area,most of which come from America and Europe,along with various activities of humanity,whose widely distributing in the region is the integrated result of the powerful reproductive capacity,ecologic adaptability and spreading ability of themselves as well as suitable conditions here.These plants,particularly such species as Amaranthus viridis,Amaranthus retrofiexus,Cheropodium hybridum,Amaranthus spinosus,Vaccaria segetalis,Coronopus didymus,Conyza canadensis,Conyza crispus,Avena fatua and Eleusine indica,have brought about harm to farming and forest of the region.So we must take some measure to them and prevent others invading meanwhile we try to use them as possible as we can.