Formation of the physical state and carbon stocks in organic matter of agrochernozem under the influence of resource-saving technologies

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

农业科学;生态环境科学;生物科学

Kurachenko, N.L.^1 ; Vlasenko, O.A.^1 ; Kolesnik, A.A.^1

Krasnoyarsk State Agrarian University, 90, Mira Av., Krasnoyarsk

660049, Russia^1

关键词: Crop cultivation;    Field experiment;    Optimal parameter;    Organic substances;    Physical state;    Plant residues;    Resource-saving technologies;    Water-soluble organic matter;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/315/4/042022/pdf
DOI  :  10.1088/1755-1315/315/4/042022

来源: IOP

【 摘 要 】

In the field experiment in the conditions of the Krasnoyarsk forest-steppe, the influence of resource-saving technologies on the physical state of agrochernozem and the carbon reserves of organic substance is studied. It is shown that the productive moisture reserves are satisfactory, in the subsoil layer there is a tendency to increase the moisture reserves by 2-5 mm on the minimum and zero background compared with plowing. Moldboard plowing and minimal tillage by fluffy consistency determined the greatest degree of differentiation of the humus horizon. Resource-saving technologies of main tillage contributed to an increase in bulk density by 0.05-0.08 g/cc while retaining the optimal parameters. The method of the main tillage determined the stocks of the above-ground mortmass. The stock of plant residues on the soil surface at the minimal background increased 1.4 times, at zero - 2.1 times compared with plowing. Stocks of phytomass, roots and underground mortmass were not identified by crop cultivation. The stock rations of carbon in mobile humus of agrochernozem increased 1.4-1.5 times against the background of resource-saving technologies due to newly formed humic acids and water-soluble organic matter.