zone of the Republic of Bashkortostan is represented
by Calcic Chernozems. The use of this soil in
irrigation reclamation has not led to degradation of its
basic properties. This soil is characterized by
favorable morphological and water-physical
properties. The humus-accumulative horizon contains
about 42 g kg
–1
(average content) (Kiryushin, 1996)
of soil organic matter, the reaction of the medium is
neutral, calcium predominates among the absorbed
cations, the soil profile is not saline.
Analysis of the content of mobile phosphorus and
exchangeable potassium shows that part of them is
washed into the underlying horizons, and the other
part goes to feed crops, which indicates the need for
their regular application in the form of fertilizers. The
maximum removal of nutrients is observed in areas
with maximum irrigation water intake and biological
productivity.
ACKNOWLEDGEMENTS
The research was carried out with the support of a
grant from the Republic of Bashkortostan, the internal
code of the scientific topic is ENOC–GVU-01-22.
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