Effect of Acidity on Copper Speciation in Soil Solution and Its Relations with Ryegrass Growth

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Effect of Acidity on Copper Speciation in Soil Solution and Its Relations with Ryegrass Growth

更新时间：2024-11-07

- Effect of Acidity on Copper Speciation in Soil Solution and Its Relations with Ryegrass Growth
- Issue 6, Pages: 171-174(2006)
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- Published：2006
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Effect of Acidity on Copper Speciation in Soil Solution and Its Relations with Ryegrass Growth[J]. 2006, (6): 171-174.
DOI：

Effect of Acidity on Copper Speciation in Soil Solution and Its Relations with Ryegrass Growth[J]. 2006, (6): 171-174. DOI：

摘要

研究了酸度对土壤溶液中铜形态的影响以及不同形态铜与黑麦草吸收及其生长的关系。结果表明：酸度强烈地影响土壤溶液中铜的化学形态，随着酸度的增加，土壤溶液中各种形态铜的含量包括水溶态铜、离子态铜及与易溶有机物结合的铜都相应增加，而且随处理铜浓度的增加不同酸度土壤上的差异更大。酸度能影响黑麦草对铜的吸收，随酸度的增加，黑麦草对铜的吸收增加。其中在对照及低铜处理中两种土壤的差异不显著，而在处理铜浓度高于50mg／kg以后两种土壤上的黑麦草铜含量差异都达显著水平。黑麦草的生长随土壤酸度的增加而变差，随处理铜浓度的增加，两种土壤的差异逐步达显著水平。黑麦草的生物量与黑麦萆体内铜含量、土壤水溶态铜、有机结合态铜及离子态铜都呈极显著的负相关关系。酸度也影响土壤溶液中易溶有机碳的含量，随酸度的降低有机碳的水平呈增加的趋势．在部分铜处理水平间差异达显著水平。

Abstract

Effects of acidity on copper speciation in soil solution and relations of copper forms with ryegrass growth and copper uptake were studied.It was found that acidity affected copper speciation severely in soil solution.With the increase in soil acidity soil copper forms of soluble

ionic and DOC(dissolved organic carbon) bounded fractions all increased and with the increase in copper treatment the effect of acidity was more significant.Acidity also affected ryegrass copper uptake.With increase in acidity ryegrass copper uptake increased and the differences of two soils were significant when copper treatment was higher than 50 mg/kg.Ryegrass biomass had significant negative correlations with ryegrass copper

soluble copper

DOCCu and IONICCu.Soil DOC content which was also affected by acidity increased with acidity decrease.

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Related Institution

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