施肥对硫华菊和波斯菊吸收积累铅的影响

生态学杂志

施肥对硫华菊和波斯菊吸收积累铅的影响

郭劲君^1,2,杨军²,胡健³,杨俊兴^2*_,郭俊娒^2_,雷梅²,李春丽^1_,曹柳⁴

（¹内蒙古工业大学能源与动力工程学院，呼和浩特 541004；²中国科学院地理科学与资源研究所环境修复中心，北京 100101；³中国科学院地球化学研究所，贵阳 550081；⁴河南省土壤污染监测与修复重点实验室，河南济源 459000）

出版日期:2018-06-10 发布日期:2018-06-10

Effects of fertilization on lead uptake and accumulation by Cosmos sulphureus and Cosmos bipinnatus.

GUO Jin-jun^1,2, YANG Jun², HU Jian³, YANG Jun-xing^2*, GUO Jun-mei², LEI Mei², LI Chun-li¹, CAO Liu⁴

(¹College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 541004, China; ²Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; ³Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; ⁴Key Laboratory for Monitor and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, Henan, China).

Online:2018-06-10 Published:2018-06-10

摘要/Abstract

摘要： 利用盆栽试验研究了不同施肥处理下（N、NP和NPK）两种菊科植物（硫华菊和波斯菊）对北方污染农田土壤铅（Pb）吸收和转运的影响。结果表明：施肥均可显著增加硫华菊和波斯菊的生物量、地上部Pb浓度和富集量，其中NPK肥处理对植物富集重金属促进效果最为显著，硫华菊和波斯菊地上部Pb浓度分别是其他处理组的1.59～1.89倍和1.17～1.32倍，地上部Pb富集量分别是对照组的1.15～3.21倍和1.18～4.28倍；施肥处理也显著提高了两种植物对Pb的转运能力，硫华菊和波斯菊的富集系数（BCF）分别达0.17（对照）～0.22（NPK处理）、0.29（对照）～0.36（NPK处理）；对Pb在两种植物叶片的亚细胞分布进一步分析表明，金属富集颗粒（MRG）是Pb在硫华菊和波斯菊亚细胞结构中的主要富集部位（大于70%）；硫华菊和波斯菊可考虑作为Pb污染土壤的植物修复材料，合理NPK肥可明显提高其对土壤Pb的修复效率；硫华菊修复效果高于波斯菊。

关键词: 细根, 养分斑块, 增温, 土壤资源异质分布

Abstract: A pot experiment was conducted to assess the phytoextraction potential for lead (Pb) of Cosmos sulphureus and Cosmos bipinnatus under different treatments of N, NP and NPK fertilizer applications in Pb contaminated soils collected from northern China. The results showed that fertilization significantly increased the biomass, shoot Pb concentrations and accumulation in both C. sulphureus and C. bipinnatus. Especially, NPK fertilization had strongest effects on Pb accumulation. Lead concentrations in the shoots ofC. sulphureus and C. bipinnatus under NPK treatment were 1.59-1.89 and 1.17-1.32 times as high as that under other treatments. The enrichment amounts of Pb in the shoots were 1.15-3.21 and 1.18-4.28 times as high as that under the control treatment, respectively. Fertilization treatment significantly improved the transport ability of Pb of both species. The bioconcentration factors (BCF) increased from 0.17 in the control to 0.22 in the NPK treatment for C. sulphureus, and from 0.29 in the control to 0.36 in the NPK treatment for C. bipinnatus. The metalenriched particles (MRG) were the major enriched position in the subcellular fractions of both species (more than 70%). In conclusion, C. sulphureus and C. bipinnatuscan be used as plant materials for remediation of Pbcontaminated soil. Moreover, NPK fertilizers can effectively improve remediation efficiency, and C. sulphureusperforms better than C. bipinnatus.

Key words: heterogeneous distribution of soil resource, nutrient patch., warming, fine root

郭劲君,杨军,胡健,杨俊兴,郭俊娒,雷梅,李春丽,曹柳. 施肥对硫华菊和波斯菊吸收积累铅的影响[J]. 生态学杂志.

GUO Jin-jun, YANG Jun, HU Jian, YANG Jun-xing, GUO Jun-mei, LEI Mei, LI Chun-li, CAO Liu. Effects of fertilization on lead uptake and accumulation by Cosmos sulphureus and Cosmos bipinnatus.[J]. cje.

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