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多因素逐步回归分析的结果表明:汞在土壤中的富集与土壤代换量和细土粒含量呈极显著的正相关关系,但与土壤有机质的关系不明显。在相同条件下经逐步回归分析和偏相关分析,汞在土壤中的迁移,即在麦粒中的富集仅与土壤物理粘粒的含量呈明显负相关关系,与其它土壤条件无相关性,但在单因素相关分析中,除土壤有机质的影响不明显外,其他土壤条件如代换量、物理粘粒、粘粒含量等均与麦粒汞的富集呈明显的负相关关系。
The results of multiple regression analysis showed that there was a significant positive correlation between mercury enrichment in soil and soil substitution and fine soil content, but not obvious relationship with soil organic matter. Under the same conditions, by stepwise regression analysis and partial correlation analysis, the migration of mercury in the soil, that is, the accumulation in the wheat grain was only negatively correlated with the content of soil physical clay, and had no correlation with other soil conditions, However, in the single factor correlation analysis, except the effect of soil organic matter is not obvious, other soil conditions such as substitution, physical clay, clay content and grain mercury were significantly negative correlation.