The influence of mineral fertilizers on metabolic processes of nitrogen in wheat and pea agrocoenosis of the Republic of Khakassia

The results of the experiment on studying the exchange processes of nitrogen metabolic processes in pea and wheat agrocoenosis under the influence of mineral fertilizers (N60Р60К60) on textural and calcareous agrochernozem of dry steppe zone of the Republic of Khakassia are presented in the study. Agrochemical indicators of the soil were рНwater - 8,2; humus (by Tyurin) - 2,93 %; the content of mobile (by Machigin) Р2О5 - 2,0; К2О - 21,0 mg/100 g of soil, respectively. Aboveground biomass was determined by the method of universal enumeration, the reserves of underground plant matter - by the method of washing out of monolithic samples. Plant samples were analyzed for nitrogen content by the method of NIR spectroscopy. Soil samples were analyzed for content of nitrate nitrogen by potentiometric method, easily hydrolyzable nitrogen and hardly hydrolyzable nitrogen by Cornfield (1n. and 6 n. NаОН). The assessment of nitrogen conversion from bank to bank was conducted in accordance with graphic scheme of metabolic processes and the system of balance equations proposed by V...