| In order to understand the element enrichment characteristics of wheat grains in Luoyang, the wheat and soil samples in the high selenium area were collected systematically, and 25 total indices of soil, the effective state indices of six elements, the morphological indices of seven elements and the contents of 12 trace elements in wheat grains were determined. The content characteristics and enrichment rules of beneficial elements and heavy metals in soil and wheat grains were studied, and the correlation between the trace elements in wheat grains and the elements in soil was summarized. The results showed that the soil in the study area was enriched with selenium and molybdenum, the enrichment coefficient of molybdenum, zinc, selenium, and copper in wheat grain was more than 15%, the selenium enrichment rate of wheat was 69.11%, and cadmium, arsenic, lead, mercury, and chromium were lower than the national average. According to the correlation analysis of elements, selenium, molybdenum, and arsenic in wheat grains are significantly positively correlated with pH, but cadmium, chromium, and nickel are significantly negatively correlated with pH; germanium is positively correlated with pH; copper and zinc are negatively correlated with pH; mercury, lead, and fluorine have no correlation with pH. Wheat grains in the study area are rich in beneficial elements and low in harmful elements, indicating that the study area is a favorable area for developing characteristic wheat enriched with selenium, molybdenum, zinc, and copper. |
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