甘肃野生草地早熟禾(Poa pratensis)分布区土壤养分状况
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Soil nutrient status of Poa pratensis distribution areas in Gansu, China
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图3. 甘肃草地早熟禾主要分布区土壤氮含量 |
Fig.3. Soil nitrogen contents of different localities of wild Poa pratensis habitats |
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