| 客土覆盖对降低放射性锶在作物中积累的效应 |
| 摘要点击 1195 全文点击 1118 投稿时间：2001-05-08 |
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| 中文关键词 放射性锶 客土覆盖 作物 吸收和积累 降低率 |
| 英文关键词 radio-strontium covering with new soil crop absorption and accumulation reduce ratio |
| 作者 | 单位 | | 史建君 | 浙江大学原子核农业科学研究所,农业部核农学重点开放实验室,杭州 | | 孙志明 | 浙江大学原子核农业科学研究所,农业部核农学重点开放实验室,杭州 | | 陈晖 | 浙江工程学院信息电子学院,杭州,310033 | | 王寿祥 | 浙江大学原子核农业科学研究所,农业部核农学重点开放实验室,杭州 | | 陈传群 | 浙江大学原子核农业科学研究所,农业部核农学重点开放实验室,杭州 |
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| 中文摘要 |
| 采用模拟污染物的同位素示踪技术研究了客土覆盖对降低大豆和白菜(尤其是作物的可食用部分)中89Sr积累的效应.结果表明客土覆盖能有效降低大豆和后茬白菜对89Sr的吸收和积累,当客土覆盖深度为9cm时,豆籽、豆壳、豆秸和豆根中89Sr比活度分别下降了82.8%、56.4%、38.7%和66.5%,后茬白菜下降了68.8%;作物中吸收积累的89Sr比活度随客土覆盖深度的增加而下降,实验数据线性回归分析表明两者间呈显著线性负相 |
| 英文摘要 |
| 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-racer 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 seed, 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 9cm. 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. |
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