中文摘要：

采用电感耦合等离子体原子发射光谱法（ICP-AES）测定了云南省5个稻作区16个州市的789份地方水稻糙米中的八种矿质元素,该方法简单快速、灵敏度高、准确性好和多元素同时测定,加标回收率为97.1%～110.2%,RSD为0.7%～4.4%。结果表明：糙米元素含量（mg.kg-1）依次为P（3834.83±486.49）〉K（2567.72±336.74）〉Mg（2567.72±336.74）〉Ca（153.67±55.90）〉Zn（33.35±13.65）〉Fe（32.08±25.51）〉Cu（14.22±11.85）〉Mn（13.58±3.22）;世界生物多样性最丰富及有色金属富集的滇西北糙米P含量高,早寒武纪动物群及磷矿富集的滇中糙米Ca,Mg,Fe和Zn含量高,作物多样性突出的滇西南糙米Cu和Mn含量高;糙米高磷钾、中钙镁锰和低铁锌分布区是世界生物多样性最丰富及矿产资源富集区。首次提出云南糙米矿质元素含量的地带性特征与生物多样性中心、矿产资源富集区、生命起源及其山脉、河流有关;进一步推断地球矿质元素分布不均匀性及其山脉、河流的相互作用是生命起源的关键。文章研究为解决人类Fe,Zn和Ca等矿质营养不良和生命起源问题以及功能稻米育种生产提供参考。

英文摘要：

In the present paper, the contents of 8 elements in brown rice of 789 accessions core collection for rice landrace from 16 prefectures of five rice regions in Yunnan province were determined by ICP-AES technique. The method proves to be simple, rapid, highly sensitive and accurate, and can be used to determine many elements at the same time. Its recovery ratio obtained by standard addition method ranged from 97.1% to 110.2%, and its RSD was from 0. 7% to 4.4%. The analytical results showed that the elemental concentrations （mg · kg^-1 ） in brown rice are in turn of P（3 834. 83±486.49）〉K（2 567.72±336.74）2〉Mg （2 567. 72±336. 74）〉Ca（153.67±55.90）〉Zn（33.35± 13.65） 〉Fe（32.08± 25.51） 〉Cu（14. 22± 11.85） 〉Mn（13.58± 3. 22）. The highest P content is in brown rice from the northwest Yunnan with the rich nonferrous metals and most abundance of biodiversity in the world, the highest Ca, Mg, Fe and Zn concentrations are in brown rice from the middle Yunnan with early cambrian fauna and phosphorite enrichment, and the highest Cu and Mn contents are in brown rice from the southwest Yunnan with the prominent crop diversity. The distributing zones with the highest P and K, middle Ca, Mg and Mn and lowest Fe and Zn in Yunnan are the enrichment zone of minal resources and largest biodiversity. As far as we know, this is the first report that the zonal characterstics of mineral elemental concentractions in brown rice are associated with a lot of factors, such as biodiversi- ty center, enrichment zone of minal resources, origin of life, mountain ranges and rivers and so on, and further it was deduced that the asymmetry of distribution for mineral elements and its reciprocity of mountain ranges and rivers are the key of origin of life. The above results provided reliable data and theory bases for the malnourished Fe and Zn and Ca for 4 billion people in the world, origin of life, the genetic breeding and production of functional rice.