| 红壤中丛枝菌根真菌对污泥态铜生物有效性的影响 |
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| 引用本文： | 廖继佩,林先贵,曹志洪.红壤中丛枝菌根真菌对污泥态铜生物有效性的影响[J].土壤学报,2003,40(6):929-936. |
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| 作者姓名： | 廖继佩 林先贵 曹志洪 |
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| 作者单位： | 中国科学院南京土壤研究所,南京,210008 |
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| 基金项目： | 国家重点基础研究发展规划项目(G1999011806)和中国科学院南京土壤研究所土壤圈物质循环联合开放实验室项目(2992803)资助 |
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| 摘 要： | 以玉米为宿主植物 ,研究了不同污泥量 (0、1 %、4% )施入红壤后接种丛枝菌根真菌Acaulosporalaevis、Glomuscaledonium和Glomusmanihotis对菌根侵染率、孢子密度、玉米生长和铜生物有效性的影响。结果表明 ,施用 1 %的污泥可增加接种A laevis的菌根侵染率和孢子密度 ,其玉米地上部和地下部生物量也有显著增加 ,而不接种 (含土著菌根真菌 )、接种G caledonium和G manihotis的菌根侵染率、孢子密度、玉米地上部和地下部生物量却有显著下降 (p<0 0 5 )。施用 1 %的污泥时接种A laevis降低了玉米地上部铜浓度 ,而接种G caledonium和G manihotis却增加了玉米地上部铜浓度 ,另外 ,接种处理增加玉米根部对铜的吸收总量。不同的菌根真菌对重金属的耐受力是不同的 ,只有施入一定的污泥量即在一定污染程度下才能发挥菌根真菌A laevis对污染土壤的修复作用
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| 关 键 词： | 丛枝菌根真菌 污泥 红壤 铜 生物有效性 |
| 收稿时间： | 2002/3/14 0:00:00 |
| 修稿时间： | 2002年3月14日 |
EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON BIOAVAILABILITY OF COPPER IN SEWAGE-SLUDGE-AMENDED RED SOIL |
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| Liao Ji-pei,Lin Xian-gui and Cao Zhi-hong.EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON BIOAVAILABILITY OF COPPER IN SEWAGE-SLUDGE-AMENDED RED SOIL[J].Acta Pedologica Sinica,2003,40(6):929-936. |
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| Authors: | Liao Ji-pei Lin Xian-gui and Cao Zhi-hong |
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| Institution: | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | The effect of different sewage sludge levels (0%, 1%, 4%) on mycorrhizal infections, spore densities, root and shoot biomass, Cu uptake by maize inoculated with three arbuscular mycorrhizal fungi (A. laevis, G. caledonium and G. manihotis) in the red soil was studied. Mycorrhizal infection, spore densities, root and shoot biomass were increased by 1% sewage sludge in comparison to no sewage sludge when the maize was inoculated with A. laevis, however, mycorrhizal infection, spore densities, and root and shoot biomass were greatly reduced in the three other treatments (p<0.05). When the red soil was amended with 1% sewage sludge the Cu concentrations in the shoot of the maize were NM (noninoculation)>G. manihotis>G. caledonium>A. laevis, and the total Cu content in the root of the maize infected with the three mycorrhizal fungi was higher than that under nonmycorrhizal treatment. The results showed that the tolerance of different arbuscular mycorrhizal fungi to heavy metals varied and A. laevis could remediate heavy metal contaminated soil when the heavy metal concentrations were not very high. |
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| Keywords: | Arbuscular mycorrhizal fungi Sewage sludge Red soil Copper Bioavailability |
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