结果表明，水土流失和土壤吸附（含粘粒、矿物质等）可能是本研究地区影响硒有效性的主要因素。

The study shows that the main factors of effect on the Se effectiveness in the zone are probably water, soil loss and soil absorption (clay particles and minerals).

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本文拟就土壤中硒的含量、形态、有效性影响因素、硒的保健作用和调节措施等方面作一综述。

The soil selenium content, form, availability, healthy effects and adjust measures were reviewed in this paper.

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