Перегляд за Автор "Rezvaya, Svetlana"

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  • Ескіз
    Документ
    BLACK SOILS DEGRADATION IN THE SOUTH-WESTERN BLACK SEA REGION AT IRRIGATION AND IN THE POST-IRRIGATION PERIOD
    (Academy of Sciences of Moldova, 2012-03) Bilanchyn, Yaroslav M.; Rezvaya, Svetlana; Біланчин, Ярослав Михайлович; Биланчин, Ярослав Михайлович
    The objective of the paper is to reveal the essence and ecological & soil consequences of the processes of degradation of the black soils in the south-western Black Sea region at irrigation and in the current post-irrigation period of their evolution, development of measures to prevent soil degradation processes in the irrigated massifs and to increase their fertility.
  • Ескіз
    Документ
    BLACK SOILS DEGRADATION IN THE SOUTH-WESTERN BLACK SEA REGION AT IRRIGATION AND IN THE POST-IRRIGATION PERIOD
    (Academy of Sciences of Moldova, 2012-03) Bilanchyn, Yaroslav M.; Rezvaya, Svetlana; Medinets, Volodymyr I.; Біланчин, Ярослав Михайлович; Биланчин, Ярослав Михайлович
    Many years studies of process of changes in composition, properties and fertility of the black soils of the Norh-Western Black Sea area in Ukraine with irrigation have revealed mobility of carbonates and humus in them, decrease of capacity of cationic consumption and content of consumed calcium, increase of share of consumed magnesium and sodium. Indicators of agro-physical state of sails under irrigation conditions are worsening significantly. In the last 15-20 years, due to sharp decrease in area of irrigated fields an extensification of agriculture the display of agrophysical solonetzicity of previously irrigated lands is strengthening, as well as processes of their dehumification: indicators of ecological&agrochemical state are degrading. Substantiated is the system or ago-amelioration measures aimed to prevent from degradation processes of irrigated black soil missives and increase their fertility.
  • Ескіз
    Документ
    Trends of current dynamics of chemical processes in the soils of Odessa region
    (2012-03) Bilanchyn, Yaroslav M.; Rezvaya, Svetlana; Medinets, Sergiy V.; Pitsyk, Vasyl Z.; Біланчин, Ярослав Михайлович; Биланчин, Ярослав Михайлович; Пицык, Василий Зиновьевич; Піцик, Василь Зіновійович
    Results of chemical processes’ dynamic studies of many years (1971-2011) in the soils of Odessa Region have been described. The most significant in the last 15-20 years have been changes of humus content and ecological & agrochemical status of black soils. In spite of some increase in the norm of fertilizers input for the last 5 years the negative balance of plant nutrition elements in soils is preserved. Ways of optimization of humus and ecological & agrochemical status of soils in the region and increase of their fertility have been proposed.