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Continuous flow method in soil microbiology

Непреривный проточный метод в микробиологии почвы III. Биологическая иммобилизация азота и фосфора

III. Biological immobilization of nitrogen and phosphorus

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Abstract

The continuous flow method, applied to the study of microbiological processes in soil samples, was used to study the biological immobilization of mineral forms of nitrogen and phosphorus. By means of this method, physical-chemical adsorption of mineral elements was differentiated from biological immobilization over a given period. Biological immobilization of nitrogen and phosphorus was related to the metabolic activity of the soil microflora. It was found that the amount of biological immobilization of nitrogen and phosphorus was closely associated with glucose decomposition. A correlation was found between the immobilization of nitrate nitrogen and carbon dioxide evolution during glucose decomposition and the amount of glucose utilized. The ratio of the amount of glucose carbon assimilated by the soil microflora to the amount of nitrogen immobilized depended on the C∶N ratio in the added solution.

Abstract

Непрерывный проточный метод, применяемый при изучении микробиологических процессов в образцах почв, был использован для исследований биологической иммобилизации минеральных форм азота и фосфора. Этим методом было возможно отделить во времени физико-химическую сорбцию минеральных элементов от биологической иммобилизации. Биологическая иммобилизация азота и фосфора находилась в тесной связи с активностью метаболизма почвенной микрофлоры. Было установлено, что количество биологически иммобилизированных азота и фосфора тесно связано с количеством глюкозы, потребляемой микрофлорой почвы. Была обнаружена корреляция между иммобилизацией азота нитратов и продукцией углекислоты при разложении глюкозы—и количеством использованной глюкозы. Отношение углерода глюкозы, ассимилируемого микрофлорой почвы, к количествы иммобилизированного азота зависело от соотношения C∶N в добавляемом растворе.

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Authors and Affiliations

  1. Department of Soil Microbiology, Institute of Microbiology, Czechoslovak Academy of Sciences, Prague 4

    J. Macura & F. Kunc

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  1. J. Macura
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  2. F. Kunc
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Macura, J., Kunc, F. Continuous flow method in soil microbiology. Folia Microbiol 10, 36–43 (1965). https://doi.org/10.1007/BF02869839

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  • DOI: https://doi.org/10.1007/BF02869839

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