The Enrichment Effect of Cd,Hg and As onBrassica chinensisandBrassica pekinensisand Its Influencing Factors(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年01期

Page:

16-21

Research Field:

Publishing date:

Info

Title:

The Enrichment Effect of Cd,Hg and As onBrassica chinensisandBrassica pekinensisand Its Influencing Factors

Author(s):

LI Xue-fang¹; WANG Lin-quan¹; SHANG Hao-bo¹; HOU Hong²; SHANGGUAN Yu-xian¹; WANG Wen-yan¹

1.College of Natural Resources and Environment,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100；

2.Chinese Academy of Environmental Sciences,Beijing 100021

Keywords:

Brassica pekinensis; Brassica chinensis; Cd; Hg; As; physiochemical property; enrichment effect

PACS:

S 565.4

DOI:

-

Abstract:

Taking Brassica chinensis and Brassica pekinensisas materials,with pot experiment,the effect of Cd,Hg and As on the growth and their enrichment in edible parts of vegetables were studied,the correlation between total content of heavy metal elements and the available content in soil and heavy metal elements contents in edible parts of were discussed and the influence of enrichment of soil physicochemical properties on the heavy metal elements accumulation in edible parts of vegetables were discussed.The results showed that,the above dry matter of the two vegetables were significantly reduced by increasing soil total Cd content,while Hg and As content had no significant influence on above dry matter；The accumulation capacity of heavy metals of Brassica chinensiswas higher than that of Brassica pekinensis,the order of the translocation capacity of different elements was Cd>Hg>As；There was a significant correlation between total Cd content in soil and that of the edible parts of the two kinds of vegetables,and there existed a significantly positive correlation between total Hg content and that of edible parts of Brassica chinensis,and no significant correlation with Brassica pekinensis,while total As content had no relation to that of edible parts of two vegetables；There were a significant correlation between effective state Cd and As content in soil and that of the edible parts of the two kinds of vegetables;The Hg content in Brassica chinensiswas significant correlated with effective state As in soil,and was no significant correlation with Brassica pekinensis；An increase in the pH values and organic matter content could significantly inhibit the accumulation of Cd of edible parts of the two kinds of vegetables,while it had no remarkable effect on that of Hg and As.

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