| 施肥对向日葵吸收积累Cd的影响 |
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| 引用本文： | 曹柳,杨俊兴,郭劲君,郭俊娒,郑国砥,卢一富. 施肥对向日葵吸收积累Cd的影响[J]. 环境科学, 2018, 39(11): 5189-5197 |
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| 作者姓名： | 曹柳 杨俊兴 郭劲君 郭俊娒 郑国砥 卢一富 |
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| 作者单位： | 河南省土壤污染监测与修复重点实验室;中国科学院地理科学与资源研究所环境修复中心;内蒙古工业大学能源与动力工程学院;西北农林科技大学资源环境...;１．杭州师范大学生命与环...;辽宁工程技术大学环境科学...;吉林农业大学资源与环境学...;仲恺农业工程学院园艺园林...;安徽工程大学生物与化学工...;武汉理工大学资源与环境工...;南华大学污染控制与资源化...;河南省土壤污染监测与修复...;福州理工学院; |
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| 基金项目： | 河南省土壤重金属污染监测与修复重点实验室开放基金项目（2017206）；国家自然科学基金项目（41771509，41771510，41201312，41271478） |
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| 摘 要： | 利用盆栽试验研究了不同施肥处理下(CK、N、NP、NPK) 3种向日葵品种(食用葵、观赏葵、油葵)对北方污染农田土壤镉(Cd)吸收和转运的影响.结果表明,施肥可显著提高观赏葵、油葵生物量及地上部Cd富集量,施NPK肥处理对植物促进效果最为显著.施NPK肥食用葵、观赏葵、油葵地上部Cd富集量分别可达6. 89、8. 92、6. 97 mg·kg~(-1),施肥处理显著提高了向日葵对Cd的富集能力,食用葵、观赏葵、油葵的富集系数(BCF)分别为2. 63(对照)～3. 10(NPK)、2. 80(对照)～4. 02(NPK)、2. 11(对照)～3. 14(NPK).对向日葵叶片亚细胞结构中Cd分布研究发现,将吸收的Cd富集在金属富集颗粒和细胞碎屑中是向日葵耐受Cd胁迫的主要解毒机制.综上所述,向日葵可作为Cd污染土壤的植物修复材料,合理施用NPK肥可明显提高植物对土壤Cd的修复效率.
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| 关 键 词： | 镉 肥料 向日葵 吸收 农田 |
| 收稿时间： | 2018-04-04 |
| 修稿时间： | 2018-05-14 |
Effect of Fertilizers on Cadmium Uptake and Accumulation by Sunflowers |
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| CAO Liu,YANG Jun-xing,GUO Jin-jun,GUO Jun-mei,ZHENG Guo-di and LU Yi-fu. Effect of Fertilizers on Cadmium Uptake and Accumulation by Sunflowers[J]. Chinese Journal of Environmental Science, 2018, 39(11): 5189-5197 |
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| Authors: | CAO Liu YANG Jun-xing GUO Jin-jun GUO Jun-mei ZHENG Guo-di LU Yi-fu |
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| Affiliation: | Key Laboratory for Monitor and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, China,Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China,College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China,Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China,Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China and Key Laboratory for Monitor and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, China |
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| Abstract: | A pot experiment was conducted to assess the phytoextraction potential for cadmium (Cd) of three types of sunflowers (edible, ornamental, and oil sunflowers) and the effects of the application of N, NP, and NPK fertilizers on Cd uptake of the three plants using Cd-contaminated soils collected from northern China. The results showed that fertilization could significantly increase the biomass, aboveground Cd concentrations and accumulation of ornamental and oil sunflowers, and the effect of NPK fertilizer was significantly better than those of other treatments. Cd concentrations of the aboveground parts of edible, ornamental, and oil sunflowers were 6.89, 8.92, 6.97 mg·kg-1, respectively. Fertilization treatment significantly improved the transport ability of Cd of the three types of sunflowers, and bioconcentration factors of edible, ornamental, and oil sunflowers were 2.63 (control) to 3.10 (NPK fertilizer), 2.80 (control) to 4.02 (NPK fertilizer), and 2.11 (control) to 3.14 (NPK fertilizer), respectively. The results further showed that the metal-enriched granules and cellular debris were the main enrichment sources in the subcellular fraction of the three types of sunflowers (more than 55%). In summary, sunflowers can be considered as plant material for remediation of Cd-contaminated soil. In addition, NPK fertilizers can effectively improve the efficiency of sunflowers. |
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| Keywords: | cadmium fertilizers sunflowers uptake farmland |
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