THE EVOLUTION OF A PHYSICAL CONDITION GRAY TYPICAL SOILS (GREYIC PHAEOZEMS1 )IN THE CULTIVABLE REGIME AFTER CLEARING OF LONG-TERM PLANTATIONS

Gheorghe Jigău, I. Cravciuc, Natalia Chiriac, N. Danilov, Tatiana Brăguța

Abstract


10-15 years in clearing fund of Republic Moldova were included in last more than 300
thousand hectares of lands before used under by intensive gardens. The researches have shown,
that on such lands productivity (crop) of the basic field cultures (winter wheat, barley, the corn,
sunflower and etc.) on 20-30 of % is lower than others arable lands. The majority of the
researchers connect this phenomenon to accumulation in soil the products of trees metabolism.
Alongside with it, by our researches is established, that soils on such lands are characterised
adverse and even by the extremely adverse physical properties and regimes caused by processes
of packing, destructirization, blocking-up the interspaced between clods of soil and others
processes of degradation. The low parameters bulking and settlement cause insignificant ability
of soils to autofriablization and autostructurization. In this connection, such lands demand
special works on optimisation of physical properties and regimes of arable and sub arable
horizons. The receptions, tested by us, on gradual increase of arable horizon have shown, that
the processes of corpacking and structurization proceed slowly and cover only top piece of
profile of soil in this connection the additional measures on deep loosening of soils are
necessary.

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DOI: http://dx.doi.org/10.15551/fppzt.v4i1.327

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