[Effect of covering with new soil on reducing the accumulation of radio-strontium in plant].
Effects of covering with new soil on reducing the accumulation of 89Sr by soybean and Chinese cabbage (especially in the edible part of crop) were studied on simulated pollutants by using the isotope-tracer techniques. The results showed that the absorption and accumulation of 89Sr in the soybean and Chinese cabbage could be decreased significantly by covering soil polluted 89Sr with new soil. The specific activity of 89Sr in bean hull, bean straw, bean root and Chinese cabbage were reduced by 82.8%, 56.4%, 38.7%, 66.5% and 68.8% respectively when the depth of covering with new soil reached 9 cm. The specific activity of absorption and accumulation 89Sr in the crop decreased with depth of the new soil profile. The specific activity of 89Sr in the crop follows a negative linear relation with depth of the new soil profile by analyzing the experiment data with linear regression method.
Shi
Jianjun
J
Key Lab. of Nuclear Agricultural Science, the Ministry of Agricultural, Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029. jjshi@zju.edu.cn
Sun
Zhiming
Z
Chen
Hui
H
Wang
Shouxiang
S
Chen
Chuanqun
C
D010944:Plants / Q000378:metabolism*; D012987:Soil; D012990:Soil Pollutants, Radioactive / Q000378:metabolism*; D013326:Strontium Radioisotopes / Q000378:metabolism*
D012987:Soil; D012990:Soil Pollutants, Radioactive; D013326:Strontium Radioisotopes