简要介绍了中国土壤背景值图集。

The atlas of China soil background values was briefly introduced in this paper.

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建议在土壤背景值调查中试用分析质量控制。

It is suggested that analytical quality control technique should be used in soil background survey.

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这些结果表明土壤背景氮过高是水稻氮肥利用率低的重要原因之一。

These results indicated that high INS was one of the main reasons for low FNUE in rice.

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