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soil available nitrogen

soil available nitrogen, Total:2 items.

In the international standard classification, soil available nitrogen involves: Soil quality. Pedology.

Professional Standard - Agriculture, soil available nitrogen

• NY/T 1849-2010 Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in acid soil Universal extract-colorimetric method
• NY/T 1848-2010 Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in neutrality or calcareous soil Universal extract-colorimetric method

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