三种农作物中镉积累与全硫含量的关系

生态学杂志

三种农作物中镉积累与全硫含量的关系

冯倩^1,2;台培东¹;李培军¹;付莎莎^1,2;郭艳丽^1,2;张银秋^1,2

¹中国科学院沈阳应用生态研究所, 沈阳 110016;²中国科学院研究生院, 北京 100039

收稿日期:2008-07-07 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10

Cadmium accumulation and its relationship with sulfur content in three crops.

FENG Qian^1,2;TAI Pei-dong¹;LI Pei-jun¹;FU Sha-sha^1,2;GUO Yan-li^1,2;ZHANG Yin-qiu^1,2

¹Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; ²Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Received:2008-07-07 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10

摘要/Abstract

摘要： 采用田间试验方法，研究了土壤中镉浓度分别为2和5 mg·kg^-1时，向日葵(Helianthus annuus)、玉米(Zea mays)和大豆(Glycine max)从苗期至成熟期各生长阶段茎叶中镉积累与全硫含量的关系。结果表明，玉米和向日葵各生长时期茎中镉含量与其全硫含量呈极显著相关，叶片中镉含量与硫含量没有相关性，说明硫在植物镉的运输过程中发挥着重要的作用。土壤中镉浓度为2 mg·kg^-1时，籽实中镉含量从高到低的顺序是：向日葵＞大豆＞玉米;土壤中镉浓度为5 mg·kg^-1时，籽实中镉含量从高到低的顺序是：大豆＞向日葵＞玉米，与籽实中硫含量的高低顺序一致;玉米籽实中镉含量最低，在2个镉浓度处理下平均值仅为0.01和0.03 mg·kg^-1，低于国家标准食品中镉限量值。

Abstract: A field experiment was conducted to study the cadmium (Cd) accumulatio n and its relationship with sulfur content in the leaves and stems of Helianthus annuus, Zea mays, and Glycine max at the soil Cd concentration of 2 and 5 mg·kg-1. The results showed that from seedling stage to mature stage, there was a significant positive correlation between Cd accumulation and sulfur content in H. annuus and Z. mays stems but no correlation in their leave s, indicating that sulfur played an important role in plant Cd translocation. Th e seed Cd content was in the order of H. annuus>G. max>Z. ma ys when the soil Cd concentration was 2 mg·kg-1, and G. max>H. annuus>Z. mays when the soil Cd concentration was 5 mg·kg-1. Maize seed had the least Cd content, being 001 and 003 mg·kg-1 at soi l Cd concentration of 2 and 5 mg·kg-1, respectively, smaller than the lim ited value of national food standard of China.

Key words: Pseudomonas fluorescens, Allelopathy, Cultivated solution, Dilution, Crops

冯倩;台培东;李培军;付莎莎;郭艳丽;张银秋. 三种农作物中镉积累与全硫含量的关系[J]. 生态学杂志.

FENG Qian^1,2;TAI Pei-dong¹;LI Pei-jun¹;FU Sha-sha^1,2;GUO Yan-li^1,2;ZHANG Yin-qiu^1,2. Cadmium accumulation and its relationship with sulfur content in three crops.[J]. cje.