用等离子体发射光谱仪分析测定了49个水稻品种（其中有45个黑稻育成品系和4个白米品种）的糙米和其中7个品种的精米的20种矿质元素的含量．结果表明：水稻品系间各元素的含量差异极大；黑米和白米间各元素的含量不尽相同，Se、Cu、Co、Pb元素白米中的含量显著高于黑米中的含量，而Mg、Mn、P、K元素黑米中的含量显著高于白米中的含量，其它元素差异不显著；所有元素糙米中的含量高于精米中的含量。 The contents of 20 kinds of mineral elements in brown rice from 49 rice varieties (including 45 black rice breeding lines and 4 white rice varieties) and polished rice from 7 varieties were determined by using plasma emission spectrometer. The results showed that the content of each element in rice lines varied greatly. The contents of various elements in black rice and white rice were different. The content of Se, Cu, Co and Pb in white rice was significantly higher than that in black rice, while the content of Mg , Mn, P, K elements in black rice were significantly higher than those in white rice, the other elements were not significantly different; the content of brown rice in all elements was higher than that in polished rice.