| 有机酸对活化土壤中镉和小麦吸收镉的影响 |
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| 引用本文： | 张敬锁,李花粉,衣纯真,张福锁.有机酸对活化土壤中镉和小麦吸收镉的影响[J].土壤学报,1999,36(1):61-66. |
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| 作者姓名： | 张敬锁 李花粉 衣纯真 张福锁 |
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| 作者单位： | 1. 中国农业大学生态与环境科学系,北京,100094
2. 中国农业大学植物营养系,北京,100094 |
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| 基金项目： | 中国科学院资助项目，39600022， |
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| 摘 要： | 向土壤中加入外源有机酸，研究有机酸对活化土壤中镉的作用和小麦吸收镉的影响。结果表明：有机酸对土壤中镉有一定的活化能力，对镉活化能力强弱顺序为ＥＤＴＡ〉缺铁小麦根分泌物〉柠檬酸〉苹果酸〉水。但ＥＤＴＡ却降低了小麦地上部镉的含量，缺铁小麦根分泌物明显增加了小麦地上部镉含量。与对照相比，柠檬酸和苹果酸对小麦地上部的镉含量有一定的促进作用，也增加了小麦地上部镉含量。
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| 关 键 词： | 镉 吸收 活化 小麦 有机酸 |
| 收稿时间： | 1997/8/12 0:00:00 |
| 修稿时间： | 1997-08-12 |
EFFECT OF ORGANIC ACIDS ON MOBILIZATION OF CADMIUM IN SOIL AND CADMIUM UPTAKE BY WHEAT PLANT |
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| Zhang Jing-suo,Li Hua-fen,Yi Chun-zhen and Zhang Fu-suo.EFFECT OF ORGANIC ACIDS ON MOBILIZATION OF CADMIUM IN SOIL AND CADMIUM UPTAKE BY WHEAT PLANT[J].Acta Pedologica Sinica,1999,36(1):61-66. |
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| Authors: | Zhang Jing-suo Li Hua-fen Yi Chun-zhen and Zhang Fu-suo |
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| Institution: | Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094;Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094;Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094;Dept. of Plant Nutrition, China agricultural University, Beijing 100094 |
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| Abstract: | Organic acids were added into soil, to study the effects of organic acids on mobilization of cadmium in soil and its uptake by wheat plant (Triticum aestivum L.).It was shown that organic acids could mobilize soil Cd, the sequences of mobilizing ability of organic acids were followed EDTA>wheat root exudate>citric acid>malic acid>water.However, EDTA decreased Cd content in shoot, and wheat root exudate collected under Fe-deficient stress significantly increased Cd content in shoot.Compared to the control, citric acid and malic acid also increased Cd content in shoot. |
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| Keywords: | Cadmium Uptake Mobilization Wheat Organic acids |
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