Advances of Soil Organic Nitrogen Forms and Testing Methods

doi:10.11924/j.issn.1000-6850.2013-3296

Abstract

Abstract: Organic nitrogen is the main existing form of soil nitrogen, which is an important hub of nitrogen cycle. Studying the form of organic nitrogen components is the focal point in the soil nitrogen fertility. Arsenicals have been shown that plants can directly absorb soluble organic nitrogen from the soil, especially small molecular amino acids. But some components are still undiscovered. The technology of using synchrotron soft X-ray source absorption near-edge structure is the advanced technology both at home and abroad. This paper reviewed the plant organic nitrogen nutrition, chemical constitution of soil organic nitrogen and its existence, the relationship between soils fertility and the content of organic nitrogen under different fertilization treatments and 4 methods for determination of soil organic nitrogen to provide theory basic for organic nitrogen acquisition in plants.

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