等有机质 |
Relationship Between Soil Available Phosphorus and Inorganic Phosphorus Forms Under Equivalent Organic Matter Condition in a Tier Soil
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图5. 不同有效磷水平土各组分无机磷含量与磷活化系数(PAC)的关系 |
Fig. 5. Phosphorus activation coefficient (PAC) as a function of the concentration of different forms of inorganic phosphorus in a tier soil with a gradient of Olsen P level |
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