薇甘菊在广东的传播及危害状况调查

The transmission and damaging effect of Mikania Micrantha in Guangdong province of China

薇甘菊在广东主要分布在珠江三角洲地区及东部沿海地区,以深圳为中心向东部、北部和西部逐渐传播开来。薇甘菊多定居在开旷和具有丰富有机质的潮湿环境,富含有机质的生活垃圾、堆积淤泥的水沟边及肥沃的弃耕地常为侵入薇甘菊的分布中心,大量的种子和快速的营养繁殖使其由定居地向外扩散和蔓延。长途交通运输等人为因素是造成薇甘菊远距离传播的主要原因。薇甘菊对灌木的危害最大,受人为干扰的次生林在一定程度上受其危害,果园的人工除草和施肥加速了薇甘菊的危害。

Mikania micrantha H.B.K. is distributed mainly in Delta of the Pearl River and the eastern coastal areas in Guangdong Province. It is transmitted gradually from Shengzhen to the east, north and west of Guangdong Province. M. micrantha often establishes in open areas and the humid soil that has rich organic matter. It is the distribution center of the invasive M. micrantha that in organic domestic rubbish, the heap of sludge beside drainage ditches and abandoned fields. It spreads and extends far away from established fields by means of plenty of seeds and fast vegetative reproduction. Anthropic factor such as long-distance transport is the major reason that M.micrantha is transmitted in long range, Shrubs were damaged hard by M. micrantha and distributed secondary forests were damaged to a certain degree. Fruit trees were damaged larger because of weeding and fertilization.