[The influence of protection action on absorption of 137Cs with agricultural plants after the Chernobyl Accident]
2009
Panov, A.V. | Aleksakhin, R.M. | Muzalevskaya, A.A., All-Russia Research and Development Inst. of Agricultural Radiology and Agroecology, Kaluga Region (Russian Federation) | Prudnikov, P.V. | Novikov, A.A.
Multi-year dynamics of transition coefficient (TC) 137Cs to plants was studied under protections actions and in their absence. A mathematical model describing the peculiarities of accumulation of radionuclide in plants was developed. The regularities of its arrival in agricultural plants were studied. The data of annual monitoring studies of the Bryansk Agrochemoradiobiological Center were used. Over 20 years after the Chernobyl accident TC reduced 7 to 85 times. It was most intensive in the first years after radioactive fallouts. Further the reducing rate of TC decreased because of radionuclide in soil. An important role of fertilizer application and soil lime treatment in reducing the accumulation of 137Cs by plants was proved. The effective periods of semi-reducing the content of 137Cs in plants during 20 years after the Chernobyl accident were determined. The indices of transition intensity of 137Cs to agricultural crops are the ratio of TC value for crops and TC value for vegetables taken as a unit due to its low value. Plants and plant products can be put in row descending: grass hay (11.9-46.0) haylage (8.2-18.9) silage corn (3.5-7.1) grains (1.7-5.7) potatoes (1.1-1.7) vegetables (1.0).
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