Assessment of environmental stability of agroserous soil according to indicator of energy potential of organic substances

3rd International Conference Environment and Sustainable Development of Territories: Ecological Challenges of the 21st Century

生态环境科学;地球科学;经济学

Murtazina, S.G.^1 ; Gaffarova, L.G.^1 ; Murtazin, M.G.^1

Kazan State Agrarian University, Karl Marks Str., 65, Kazan

420015, Russia^1

关键词: Agricultural landscapes;    Ecological stability;    Environmental stability;    Fractional composition;    Humic and fulvic acids;    Mineral fertilizers;    Organic fertilizers;    Organic substances;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/107/1/012120/pdf
DOI  :  10.1088/1755-1315/107/1/012120

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Studies of the group and fractional composition of humus have determineded that the long-term use of soil (for 20 years) without the use of fertilizers (control) leads to a decrease in the content of humic acids and fulvic acids relative to the initial soil, which indicates an increase in mineralization of the soil humus. Under the influence of a long application of high doses of mineral fertilizers, the content of mobile fractions of humic and fulvic acids in the field rotation increases in the humus content. In systems of agriculture that are not balanced by organic matter, which are predominant in most farms of the Republic of Tatarstan, the use of very high doses of potassium fertilizers is not justified energetically. To compensate for losses of humus and its energy potential in calculating organic fertilizers on backgrounds with high doses of mineral fertilizers, the humification coefficients of organic residues should be increased by 30-40% during the rotational period of 5-6 years, which will reduce the loss of energy reserves and thereby improve the ecological stability of soils and the stability of agricultural landscapes.