首页|Field demonstration of reduction of lead availability in soil and cabbage (Brassica Chinensis L.) contaminated by mining tailings using phosphorus fertilizers

Field demonstration of reduction of lead availability in soil and cabbage (Brassica Chinensis L.) contaminated by mining tailings using phosphorus fertilizers

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A field demonstration of reduction of lead availability in a soil and cabbage (Brassica Chinensis L.) contaminated by mining tailings, located in Shaoxing, China was carried out to evaluate the effects of applications of phosphorus fertilizers on Pb fractionation and Pb phytoavailability in the soil. It was found that the addition of all three P fertilizers including single super phosphate (SSP), phosphate rock (PR), and calcium magnesium phosphate (CMP) significantly decreased the percentage of water-soluble and exchangeable (WE) soil Pb and then reduced the uptake of Pb, Cd, and Zn by the cabbage compared to the control (CK). The results showed that the level of 300 g P/m2 soil was the most cost-effective application rate of P fertilizers for reducing Pb availability at the first stage of remediation, and that at this P level, the effect of WE fraction of Pb in the soil decreased by three phosphorus fertilizers followed the order: CMP (79%)＞SSP (41%)＞PR (23%); Effectiveness on the reduction of Pb uptake by cabbage was in the order: CMP (53%)＞SSP (41%)＞PR (30%). Therefore our field trial demonstrated that it was effective and feasible to reduce Pb availability in soil and cabbage contaminated by mining tailings using P fertilizers in China and PR would be a most cost-effective amendment.

LeadFractionationMining tailingsPhosphorus fertilizerCabbageSoil remediation

XIE Zheng-miao、WANG Bi-ling、SUN Ye-fang、LI Jing

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Department of Environmental Science and Engineering, Hangzhou University of Electronics Science and Technology, Hangzhou 310018, China

Institute for Soil and Water Resource and Environment, Zhejiang University, Hangzhou 310029, China

Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, China

Shaoxing Academy of Agricultural Sciences, Shaoxing 312003, China

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国家自然科学基金

40432004

2006

浙江大学学报(英文版)(B辑:生物医学和生物技术)
浙江大学

浙江大学学报(英文版)(B辑:生物医学和生物技术)

影响因子：0.798
ISSN：1673-1581
年,卷(期)：2006.7(1)
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