| 小麦对134Cs吸收的研究 |
| 摘要点击 667 全文点击 560 投稿时间：1990-01-17 |
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| 中文关键词 134Cs 小麦 土壤 |
| 英文关键词 cesium-134 wheat soil irrigating |
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| 中文摘要 |
| 本文介绍小麦对134Cs的吸收试验,结果表明,134Cs在小麦中的比活度,根中最高,麦杆次之,麦粒最低。麸皮中137Cs的比活度高于面粉。土壤对134Cs的吸附能力,以青紫泥最强,红壤次之,小粉土最弱;土壤对134Cs吸附能力的强弱与土壤的质地、PH和有机质含量有关。随着134Cs施入土壤的延迟和施人次数的增加,小麦对134Cs的吸收也增加。134Cs在土壤中迁移很少,90.4%集中在0-3cm的表土层;134Cs在土壤-小麦中的分配比为97.9%:2.1%;小麦对土壤中134Cs的富集系数为1.75。 |
| 英文摘要 |
| The roots of wheat can absorb 134Cs from irrigating water. The specific activity of 134Cs in the roots is the highest, in grains the lowest, and that in bran is higher than in flour. Absorption capacity of 134Cs by wheat varies with different kinds of soil. The order of absorption capacity is as follows: farinose clay>clay loam≥sandy loam. In addition, the absorption capacity of 134Cs in soils is different in soil texture, pH and organic matter; absorption amount of it varies with irrigating time, the closer to maturity stage, the more amount of 134Cs in wheat. Its migration in soil is very slow because there is 90.4% of 134Cs concentrated in surface soil (0-3 cm). The ratio of 134Cs in wheat and in soil is 2.1% to 97.9%. |
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