Abstract: Mikania micrantha kunth is an exotic weed species for sout heastern Asia and the Pacific region, which is an extremely fast growing, sprawling, perennial vine and belongs to Asteraceae. It was from tropical central and south America and crowded into Hong Kong, Hainan province and the region along the coast line of Guangdong province in P. R. China, such as Huizhou, Shenzhen, Zhongshan, Zhuhai, Yangjiang etc. since 1980s. M. micrantha has seriously harmed the crops and the forest . In Neilingding Island National Nature Reserve, about 6-7 ha of forest has degenerated into ecological invasion. This paper briefly describes the characteristics of M. micrantha about its biology and ecology, reports on invading fields and its harms in P. R. China and southeastern Asia. The research development on the control strategies (including biological control, chemical control and manual project control) is also presented.

Key words: plastic film mulching, straw mulching, soil moisture, dryland, winter wheat.