Express-method of determining nitrogen mineralization ability of peat soils
2015
Semenenko,N.N.
In a course of the research there was studied the express–method of determining of nitrogen mineralization ability of peat soils. The research was realized in the conditions of the Republic of Belarus. Method for determining of nitrogen mineralization ability of peat soils was based on carrying out hydrolysis for 18 ± 0.5 hours at temperature of +27 Celsius degrees in the presence of a restoring agent nitrates alloy Devarda or zinc dust mineral and organic compounds of nitrogen with as extractant solution of 0.2 M KOH at a ratio of soil: solution 1:20, measuring the concentration of ammonium nitrogen in the filtrate using photometer and processing results of the analysis by a personal computer. Transformation dynamics of nitrogen organic compounds in peat soils in different stages of evolution, the preparation of the working scale model solutions for the determination of ammonium nitrogen, examples of calculation of nitrogen-mineralizing ability of peat soils of different stages of evolution, comparative characteristic of nitrogen-mineralizing ability of peat soils in different stages of evolution, defined in different ways, diagnostic signs indicative of biological activity in agro-peat soils of different stages of evolution (0-20 cm layer) were presented.
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