Perennial grasses as the ecological link for preserving the fertility of the peat soils polluted by radionuclides | Многолетние травы как экологическое звено при сохранении плодородия торфяных почв, загрязненных радионуклидами
2011
Podolyak, A.G. | Saraseko, E.G. | Arastovich, T.V. | Suzko, O.V. | Tagaj, S.A. | Lasko, T.V. | Goloveshkin, V.V., National Academy of Sciences (Belarus). Institute of Radiology
The problem of degradation of peat soils polluted with 137Cs and 90Sr and cultivation of the crop production on them is considered. Distribution of grasslands and pastures on polluted peat soils by the regions of the Republic of Belarus is presented. Characteristics of the peat soils are shown. Coefficients of migration of radionuclides in perennial grasses' hay depending on mobile potassium availability (for 137Cs) and soil reaction pHkci (for 90sr) are evaluated. Inadequacy of the hay, harvested on polluted territories, to the main quality characteristics is presented and analyzed. Crop mixtures recommended for grasslands and pastures reseeding on polluted territories are suggested. The list of cultivars suitable for the conditions of over wetting is offered. It is recommended to use shallow peat soils as grasslands. Permanent cereal grasses restore organic matter of these soils and provide economic efficiency of agricultural use. According the results of the research the transfer factors of 137Cs and 90Sr to plants are relatively low. This fact is explained by the time that has passed since the accident on Chernobyl nuclear power plant and by the variations of mobile potassium and exchangeable acidity in peat soils.
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