Influence of application of nitrogen and phosphorus on the uptake of $^{90}Sr$ by raddish and chinese cabbage

질소(窒素)와 인산시용(燐酸施用)에 따른 무우 및 배추의 $^{90}Sr$ 흡수(吸收) 영향(影響)

  • 김재성 (한국원자력연구소 방사선유전공학연구실) ;
  • 이영일 (한국원자력연구소 방사선유전공학연구실) ;
  • 이상재 (한국원자력연구소 방사선유전공학연구실) ;
  • 임수길 (고려대학교 농과대학 농화학과)
  • Published : 1991.06.30


The influence of phosphorus and nitrogen application on the uptake of radioactive strontium by Chinese cabbage and raddish was studied in pot experiments. The dry matter yield of Chinese cabbage and raddish increased with the application of phosphorus and nitrogen. High yield of raddish was obtained by the additions of nitrate while Chinese cabbage was obtained by the ammonium. The content of potassium in the vegetables was enhanced by the application of phosphorus. and the calcium content increased with the application of nitrogen. The content of $^{90}Sr$ was higher in the raddish than in the Chinese cabbage while the $^{90}Sr$ activity in the dry matter of vegetables decreased considerably with the application of phosphorus and nitrogen fertilizer. This indicates that the suppression of uptake was more effective with the application of nitrate than with ammonium.