TIME DYNAMICS OF PARAMETERS OF MIGRATION 137CS AND 90SR IN SYSTEM SOIL-PLANT: THE COMPARATIVE ANALYSIS

Abstract

It is established, that for after emergency the period there was an essential decrease in biological availability and intensity of migration¹³⁷Cs in system soil-plant owing to not exchange fixing and reduction of water-soluble and exchange forms in soil. Transfer factors were reduced on sod-podzolic soils in grain crops in 3,0-6,7 times, in potato tubers - in 5,0-7,5 times. On peat soils availability¹³⁷Cs has decreased on the average 2,5 times. Transition¹³⁷Cs in plants on these soils in 2,7 times above, than on sod- podzolic soils. Receipt indicators⁹⁰Sr in plants most intensively decreased right after emergency losses, further they were stabilized. In connection with high mobility⁹⁰Sr in soil (50% and more are in the exchange form) transfer factors in agricultural crops essentially above in comparison with¹³⁷Cs - in grain crops on 2,5-3 order, in potato tubers - on the average in 5 times.