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为提高大米产地溯源判别的正确性,试验研究了水稻品种对于大米产地溯源判别正确性的影响。利用原子吸收分光光度法(AAS)检测来自吉林省松原市、德惠市、梅河口市3个产地的3个水稻品种120个样品中11种矿物元素(Pb,Cd,K,Na,Ca,Mg,Zn,Cu,Fe,Mn,Cr)的含量,对大米中矿物元素数据进行差异分析、雷达分析和线性判别分析。结果显示:元素Cd、Cr、Fe、K、Mg、Zn、Pb在大米品种与产地间均存在相对较大的差异。德惠(同一产地)不同品种大米的判别正确率为100%,成功利用不同品种大米中矿物元素含量将大米品种进行正确分类。进行大米产地判别时,3个产地不同品种大米的判别分析正确率为90%,3个产地同一品种大米的产地判别分析正确率为100%,证明了水稻品种对于大米产地溯源判别正确性有影响。
In order to improve the correctness of the traceability of rice origin, the effects of rice varieties on the correctness of traceability of origin of rice were studied. Elemental concentrations of 11 mineral elements (Pb, Cd, K, Na, Ca, K) from 120 rice cultivars from 3 rice producing areas in Songyuan, Dehui and Meihekou of Jilin Province were detected by atomic absorption spectrophotometry (AAS) Mg, Zn, Cu, Fe, Mn, Cr) content in rice, the difference analysis of mineral elements in rice, radar analysis and linear discriminant analysis. The results showed that the elements Cd, Cr, Fe, K, Mg, Zn and Pb in rice varieties and producing areas are relatively large differences. Dehui (the same place of origin) different varieties of rice discrimination is 100% accuracy, the successful use of different varieties of rice mineral elements in the classification of rice varieties correctly. When discriminating the origin of rice, the correctness of discriminant analysis was 90% for three varieties of rice with different producing areas, and the accuracy of discriminant analysis of the origin of the same variety of rice in three producing areas was 100%, which proved that rice varieties had an impact on the correctness of origin identification of rice. .