Effect of applying measures of fertilizer on 137Cs absorption by rice

The effect of various applying measures with different fertilizer on the absorption of 137Cs by rice was studied. The results show that the absorption of 137Cs by rice decreased by 32% compared with control when potassium salt was applied as 1/20 of the exchangeable cations of soil. 137Cs accumulated in rice seedling decreased more than 76% compared with control after 57 days of 137Cs contamination. The analytical results illustrated that the exchangeable 137Cs in soil was lower than that of control when the potassium salt was applied. More than 99% of 137Cs is bounded to the soil, therefore, it is hard for the rice to absorb 137Cs from soil. The effect of treatment with low content of potassium salt is better than that of the treatment with the higher one