| 根分泌物对根际重金属动态的影响 |
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| 引用本文： | 李花粉,张福锁,李春俭,毛达如.根分泌物对根际重金属动态的影响[J].环境科学学报,1998,18(2):199-203. |
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| 作者姓名： | 李花粉 张福锁 李春俭 毛达如 |
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| 作者单位： | 中国农业大学资源与环境学院,北京,100094 |
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| 摘 要： | 介绍了采用上，下分根试验，使水稻根系下部生长在不同浓度铁营养液中，研究不同供铁处理对不同品种水稻吸收生金属和微量元素及其在体内转移和运输的影响。结果表明缺铁处理时常优８７－８８品种的植株地下部铁含量仅为正常供铁处理的５８％，而Ｃｄ，Ｚｎ的含量却比正常供的植株高１．４倍；缺铁时远诱一号和科长８９－１１３两个品种植株地上部含铁量也比正常供铁时低，但差异不如常优８７－８８明显，Ｃｄ，Ｚｎ含量比正常供铁时
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| 关 键 词： | 根分泌物 重金属 水稻 分根试验 土壤污染 |
| 收稿时间： | 1996/3/11 0:00:00 |
| 修稿时间： | 9/7/1996 12:00:00 AM |
EFFECT OF ROOT EXUDATES ON THE BEHAVIOR OF HEAVY METALS IN THE RHIZOSPHERE |
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| Li Huafen,Zhang Fusuo,Li Chunjian and Mao Daru.EFFECT OF ROOT EXUDATES ON THE BEHAVIOR OF HEAVY METALS IN THE RHIZOSPHERE[J].Acta Scientiae Circumstantiae,1998,18(2):199-203. |
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| Authors: | Li Huafen Zhang Fusuo Li Chunjian and Mao Daru |
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| Affiliation: | College of Agricuttural Resources and Environmental Science, China Agricultural University, Beijing 100094,College of Agricuttural Resources and Environmental Science, China Agricultural University, Beijing 100094,College of Agricuttural Resources and Environmental Science, China Agricultural University, Beijing 100094 and College of Agricuttural Resources and Environmental Science, China Agricultural University, Beijing 100094 |
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| Abstract: | Spliting root experiments were conducted to study the effect of iron nutrition on the uptake, translocation and transport of heavy metals by roots of three rice varieties growing under Fe deficient and Fe sufficient conditions. The results showed that the Fe concentrations in shoots of Changyou 87 88 under Fe deficient stress were 58% of that of Fe sufficient treatment, and Cd, Zn concentrations were 1.4 times higher than that of Fe sufficient treatment. Fe concentrations in shoots of Yuanyouyihao and Kechang89 113 under Fe deficient stress were also lower than that of Fe sufficient treatment, but the differences were smaller than the former. Cd and Zn concentrations were also higher than that of Fe sufficient treatment, but the differences were also smaller than that of Changyou 87 88. The Mn concentrations in shoots of Changyou 87 88 and Yuanyouyihao from Fe deficient treatment were higher than that of Fe sufficient treatment, but the Mn concentrations in shoots of Kechang 89 113 showed no significant difference between treatments. |
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| Keywords: | root exudates heavy metal rice spliting root experiment |
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