of the Urals

Russian Journal of Agricultural Research

The publication is registered by the Ministry of the Russian Federation
for Affairs of the Press, Television and Radio Broadcasting and Mass Communication Media.
Registration certificate: PI number 77-12831 on May 31, 2002
Subscription index in catalog «Russian Press» - 16356
ISSN 1997 - 4868 (Print)

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Journal is included in the list of VAK (from 25.09.2017), No. 291

ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 10 (164) 2017

Биология и биотехнологии

Моторин А. С. доктор сельскохозяйственных наук, главный научный сотрудник Научно-исследовательский институт сельского хозяйства Северного Зауралья

УДК:631.6: 576.8 (571.12)


 The resultsof field and laboratory studies of the microflora of the drained peat soils ofNorthern Trans-Urals, used for growing of perennial grasses. It is shown thatpeat soils are characterized by specific features that lead to the formation ofa kind of microbial cenoses. The microbial association of drained peat soils isformed under conditions of high organogenicity. The most numerous group ofmicroorganisms in peat soils is bacteria. They govern the flow and activity ofkey microbial processes. The total number of microflora varies significantlyalong the soil profile, due to its genesis. There is a negative highassociation between nitrifying bacteria (r = –0.85), cellulose-decomposing (r =–0.70) and bacteria that decompose organic nitrogen. The predominance in thepeat soils of microorganisms that assimilate mineral forms of nitrogen overthose that utilize its organic compounds proves the increased oligotrophy ofthe habitat for carbon and nitrogen. The number of organisms decomposingorganic nitrogen is larger in the plow layer. With depth, their number becomessmaller. The results of the studies characterize peat soils as poor in terms ofthe number of microorganisms of the main physiological groups.


peat soil, microflora, bacteria, actinomycetes, nitrifiers, organic matter, correlation.


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