| Cite this article: | 刘洋,李廷亮.山西省主要粮食作物种植区土壤微量元素含量特征[J].灌溉排水学报,0,():-. |
| liuyang,Li Tingliang.山西省主要粮食作物种植区土壤微量元素含量特征[J].灌溉排水学报,0,():-. |
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| Characteristics of soil trace elements from main grain crop growing areas in Shanxi Province |
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liuyang, Li Tingliang
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Shanxi Agriculture University
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| Abstract: |
| 【Background and objective】For proven arable layer of soil trace element content and its influencing factors in the study area. 【Method】We select three representative counties with the largest crop, respectively in wheat, corn and millet area, and choose 100 sampling points in each county, in Shanxi Province. Finally, analyzes its top layer of soil trace elements (Fe, Mn, zinc, Se) content,??and their relationship with pH, organic matter, soil type and crop type. 【Result】The contents of Fe, Mn, Zn and Se in the topsoil of the study area were 30.42 g/kg, 626.55 mg/kg, 78.06 mg/kg and 0.283 mg/kg.?And the contents of four kinds of trace elements in different planting areas are as follows: wheat planting area > corn planting area > millet planting area. Although the soil trace elements in the three growing areas were at medium (or moderate) or above level, there were also trace element deficiency in different degrees. The overall Fe deficiency proportion was the largest in the study area, and the overall trace element deficiency proportion was the largest in millet growing area.?The contents of trace element in litho soils, fluvo-aquic soils, faagmental soils, cinnamon soils and red clay soils were significantly higher than those in brown soils, cultivated loessal soils, castno-cinnamon soils and aeolian sandy soils (P < 0.05).?The contents of trace elements in litho soils and fluvo-aquic soils were the highest, while the contents in castno-cinnamon soils and aeolian sandy soils were the lowest.?However, the differences of the same trace element content among different soil genera were not significant. Correlation analysis results showed that pH was significantly negatively correlated with the four trace elements, organic matter was significantly positively correlated with the four trace elements. and the correlation between the four trace elements was extremely significantly positive. There was a significant positive correlation among the four trace elements. Further, multiple stepwise regression analysis showed that the comprehensive explanatory rates of the four influencing factors, including planting area, soil type, pH and organic matter on the soil Se content was the highest, up to 47.9 %, the variation of Mn content was only affected by soil type and organic matter, and the comprehensive interpretation rate was 8.1 %. The contents of trace elements in the study area were generally as follows: wheat growing area > corn growing area > millet growing area.【Conclusion】In conclusion, although Fe, Mn, Zn and Se are at moderate (moderate) or above level in surface soil of main grain crop growing areas in Shanxi Province at present, it is still necessary to pay attention to Fe supplement and improve the overall nutrient content in millet growing areas.?Se content in soil was most affected by environmental changes, while Mn content in soil was relatively stable. |
| Key words: Shanxi Province; main grain crop planting area; surface soil; trace elements; content characteristic; influence factors |
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