摘要
广西桂平市原分布有两种野生稻,一种为普通野生稻(Oryza rufipogon),另一种为药用野生稻(Oryza officinalis)。2007年5月重新对桂平市野生稻资源进行调查与收集,结果表明:发现原生地新分布点2个,面积约1998 m2;普通野生稻原生地现存分布点24个,占原记载的42%,毁灭程度为58%;药用野生稻原生地现存分布点2个,占原记载的14%,毁灭程度为86%。导致桂平市野生稻资源严重被毁的原因主要是农业开垦、过度放牧、外来物种侵蚀以及开采矿石等,据此提出了提高全民对野生稻资源的保护意识、建立原生境野生稻保护区、加强异位保存等3项保护对策。
Two species of wild rice resources,Oryza rufipogon and Oryza officinalis,originally distributed in Guiping,Guangxi.Resources of wild rice in Guiping were investigated and recollected in May of 2007.The results showed that 2 new distribution sites with an area of 1998 m2 in original places were found.24 existing distribution sites of Oryza rufipogon accounted for 42 % of original records,which showed that 58 % of them were destroyed.2 existing distribution sites of Oryza officinalis accounted for 14 % of original records,which showed that 86 % of them were destroyed.The reasons that led to the serious destruction of wild rice resoures were land reclaim of agriculture,over herding,interruption by exotic species and coal mining.These protection countermeasures were put forward,including deepening the whole nation＇s protection understandings to wild rice resources,establishing in-situ protection areas of wild rice,strengthening conservation and etc.
出处
《西南农业学报》
CSCD
2007年第5期943-947,共5页
Southwest China Journal of Agricultural Sciences
基金
农业部国家重点保护农业野生植物普查项目(2006DKA21002-02-01-02)
关键词
桂平市
野生稻资源
现状调查
保护对策
Guiping city
wild rice resources
investigation
protection countermeasures
