| 不同改良剂对镉污染土壤中小白菜吸收镉的影响 |
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| 引用本文： | 郭利敏,艾绍英,唐明灯,李盟军,姚建武,王艳红,曾招兵.不同改良剂对镉污染土壤中小白菜吸收镉的影响[J].中国生态农业学报,2010,18(3):654-658. |
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| 作者姓名： | 郭利敏 艾绍英 唐明灯 李盟军 姚建武 王艳红 曾招兵 |
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| 作者单位： | 1. 广东省农业科学院土壤肥料研究所,广东省养分资源循环利用与耕地保育重点实验室,广州,510640;西北农林科技大学资源环境学院,杨凌,712100
2. 广东省农业科学院土壤肥料研究所,广东省养分资源循环利用与耕地保育重点实验室,广州,510640 |
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| 基金项目： | 国家科技支撑计划项目(2007BAD89B14)、广东省农业领域重点专项项目(2009A0201005)和广东省社会发展计划项目(2006A36703005) |
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| 摘 要： | 采用盆栽试验, 研究了施用石灰、钙镁磷肥、泥炭、碱渣4种土壤改良剂对外加镉污染的赤红壤上小白菜产量、镉吸收量、土壤有效态镉及pH的影响。结果表明: 外加1 mg·kg-1和5 mg·kg-1镉对小白菜生物量无显著影响, 且1 mg·kg-1镉对小白菜生长有一定的促进作用; 施用改良剂对镉污染土壤上小白菜无显著增产效果。施用4种改良剂均能降低小白菜地上部镉含量, 作用效果为石灰≈泥炭>碱渣>钙镁磷肥。不同改良剂对小白菜根部镉含量影响不同, 泥炭和石灰在所有镉浓度下、钙镁磷肥在0和1 mg·kg-1镉浓度下可显著降低根部镉含量, 而碱渣无明显作用, 种植两茬规律一致。土壤有效态镉含量与pH呈显著负相关; 施用石灰、碱渣、钙镁磷肥使土壤pH显著升高, 有效态镉含量显著降低, 从而降低小白菜对镉的吸收; 泥炭可显著提高土壤pH, 虽降低土壤有效态镉作用效果不显著, 但显著降低小白菜体内镉含量, 这可能与土壤中形成难以被植物吸收的镉有机结合物有关。两茬蔬菜种植结果显示, 施用后期改良剂对镉污染的抑制效果也较明显。
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| 关 键 词： | 改良剂 镉污染 赤红壤 小白菜 镉吸收 生物量 有效态镉 土壤pH |
Effect of amendment on Cd uptake by Brassia chinensis in Cd-contaminated soils |
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| GUO Li-Min,AI Shao-Ying,TANG Ming-Deng,LI Meng-Jun,YAO Jian-Wu,WANG Yan-Hong and ZENG Zhao-Bing.Effect of amendment on Cd uptake by Brassia chinensis in Cd-contaminated soils[J].Chinese Journal of Eco-Agriculture,2010,18(3):654-658. |
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| Authors: | GUO Li-Min AI Shao-Ying TANG Ming-Deng LI Meng-Jun YAO Jian-Wu WANG Yan-Hong and ZENG Zhao-Bing |
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| Institution: | 1. Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China; 2. College of Resources and Environmental Science, Northwest A & F University, Y;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences; Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640, China |
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| Abstract: | |
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| Keywords: | Amendment Cd pollution Latosolic red soil Brassia chinensis Cd uptake Biomass DTPA-extracted Cd Soil pH |
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