Root uptake and translocation of radiocaesium from agricultural soils by various plant species

摘要: Plant uptake of radiocaesium from soil is an important pathway for the entry this pollutant into human food chain and so contributes to any assessment radiation dose following contamination. Large differences in soil–plant transfer factors have been reported plant species grown on same soils. Few studies attempted distinguish between root root-to-shoot translocation. We investigated artificially contaminated soils subsequent translocation shoots various three agricultural The effects short contact times potassium starvation or enrichment studied. Cs adsorption properties rhizosphere compared with those initial proportion activity removed largely dependent. Root less effect, but appear be determined, not influenced by properties. Differences soil-to-shoot factor arise species-dependent Root-to-shoot ratios are There was little effect status. action slightly enhanced one soil, probably due mineral weathering associated release nonexchangeable potassium.