Oxygen activity as a function of the composition of mixed fertilizers

International Scientific Conference «AGRITECH-2019: Agribusiness, Environmental Engineering and Biotechnologies»

农业科学;生态环境科学;生物科学

Podshivalova, A.K.^1

Irkutsk State Agrarian University Named after A.A. Ezhevsky, Molodezhny Settlement, Irkutsk distrikt, Irkutsk region

664038, Russia^1

关键词: Chemical activities;    Chemical thermodynamics;    Component composition;    Independent components;    Isobaric-isothermal;    Mineral fertilizers;    Number of components;    Physicochemical model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/315/5/052056/pdf
DOI  :  10.1088/1755-1315/315/5/052056

来源: IOP

【 摘 要 】

The influence of the component composition of mixed mineral fertilizers and soils on the oxygen activity in the composition of mixed nitrogen-containing, phosphorus-containing and potassium-containing mineral fertilizers was studied. The study was performed by the method of physicochemical modeling based on the "Selector" software package. The following system totals were calculated: the isobaric-isothermal potential of the system, the chemical potentials of the respective independent components, the number of components of the solution, the amount of emitted gases, the pH of the solution, the redox potential of the system. A significant positive effect of limestone and hydrated lime on the chemical activity of oxygen has been revealed. It is shown that clay soils, from the standpoint of chemical thermodynamics, are favorable in terms of increasing the oxygen activity when using nitrogen-containing, phosphorus-containing and potassium-containing fertilizers.