Change of biological activity of soils under the influence of ameliorative loosening

Abstract

Abstracts-Ameliorative loosening of soils improved its water-air and food regimes and intensified aerobic microorganisms with the increased levels of energetic activity. The number of aerobic cellulose decomposing bacteria in topsoil increased with respect to control group by 17.8%, while that in the subsurface layer increased by 8.8%. Intensity of linen fabric decomposition increased, on average, by 14.0-28.6% and catalase activity increased by 8.7-24.4%. Increased activity of soil microflora provides activation of soil respiration and high crop yields.

Agrophysical and Biological Properties of Drainage Soils in Land Reclamation

“…The soil pore space is most closely related to the bulk density (bulk mass) of the soil. The latter are among the crucial criteria determining the physical state of the soil medium, soil water, air-and-water and nutritional turnovers, plant moisture support, the type and trend of microbiological events, root system development, the level of effective fertility and productivity of the plant on the lands being dried (Bondarev, 1994;Kuznetsova, 1990;Mitrofanov, 2012Mitrofanov, , 2014Revut, 1968).…”

“…In this connection, the role of agrophysical and biological factors in the management of soil processes is to a much lesser extent. However, their role in the formation of effective fertility is often leading, especially on waterlogged and insufficiently drained soils (Mitrofanov et al, 2014(Mitrofanov et al, , 2015Moiseev, 2011). The main criteria characterizing the agrophysical factors of soil fertility include the lowest moisture capacity, available moisture reserves, water permeability, density of aggregation, penetration resistance, total porosity, aeration porosity, etc (Kiryushina & Ivanova, 2005;Bondarev, 1994;Kuznetsova, 1990;Maslov, 1979;Mitrofanov, 2012;Revut, 1968;Blokhuis, 2006).…”