| 蚯蚓和EM对果园土壤镉吸附－解吸及苹果镉含量的影响 |
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| 引用本文： | 申为宝,杨洪强,申洁,乔海涛.蚯蚓和EM对果园土壤镉吸附－解吸及苹果镉含量的影响[J].园艺学报,2008,35(11):1561-1566. |
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| 作者姓名： | 申为宝 杨洪强 申洁 乔海涛 |
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| 作者单位： | （山东农业大学园艺科学与工程学院，山东泰安271018；山东省临沂市农业局，山东临沂276001，作物生物学国家重点实验室，山东泰安271018；浙江大学竺可桢学院，杭州310058） |
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| 摘 要： | 以果园棕壤土和3年生盆栽苹果（Malus domestica Borkh）为试验材料，研究了引入蚯蚓和有效微生物群（EM）后，土壤对镉离子（Cd2+）的吸附－解吸行为及苹果根系和果实镉含量的变化。结果表明，随着土壤Cd2+含量增加，土壤对Cd2+的吸附率降低，解吸率提高；Langmuir方程显示，经过蚯蚓和EM处理的土壤对Cd2+的吸附强度和对Cd2+的最大缓冲容量（MBC）下降；在土壤Cd2+含量较高时，蚯蚓和EM降低了土壤对Cd2+的吸附率，提高了解吸率，EM效果更明显。苹果根系和果实镉含量随着土壤施Cd2+提高而增加，蚯蚓和EM明显促进根系对镉的吸收及镉在果实中的积累，在土壤镉含量较高时，蚯蚓和EM的作用更显著。
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| 关 键 词： | 苹果 蚯蚓 微生物 镉 吸附 解吸 |
| 收稿时间： | 2008-06-16 |
The Effects of Earthworms and Effective Microorganisms on the Adsorption-desorption of Cadmium in Orchard Soils and Cadmium Accumulation in Apple |
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SHEN Wei-bao,YANG Hong-qiang,SHEN Jie,QIAO Hai-tao
.The Effects of Earthworms and Effective Microorganisms on the Adsorption-desorption of Cadmium in Orchard Soils and Cadmium Accumulation in Apple[J].Acta Horticulturae Sinica,2008,35(11):1561-1566. |
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| Authors: | SHEN Wei-bao YANG Hong-qiang SHEN Jie QIAO Hai-tao
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| Institution: | (College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong Tai'an 271018, China; Linyi Agricultural Bureau, Shandong Linyi 27600, China;State Key Laboratory of Crop Biology, Shandong Tai'an 271018, China;Chu Kochen Honors College Zhejiang University, Hangzhou 310058, China) |
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| Abstract: | The Cd2+ adsorption-desorption in soil and the content of Cd2+ in roots and fruits were studied by treatment with the earthworm and effective microorganisms (EM), using the orchard brown soils and potted three-year-old apple trees (Malus domestica Borkh) as materials. The results showed that the adsorption ratio of the Cd2+ in the soils reduced and the desorption ratio of Cd2+ enhanced as the soil Cd2+ concentration increasing. According to the Langmuir equation, the adsorption strength and the Maximum Buffering Capacity (MBC) of the soil to Cd2+ decreased after the soil was treated with the earthworm and EM. The earthworm and EM reduced the adsorption ratio of the soil for Cd2+ and increased Cd2+ desorption ratio in the soil of higher Cd2+ concentration. And the EM had more obvious effect compared with earthworm. In the root and fruit, Cd content increased with Cd2+concentration increasing in the soil. The earthworm and EM significantly promoted the uptakes of Cd2+ in the root and the accumulation of Cd2+ in the fruit, and the effect was more remarkable when the Cd2+ concentration was higher in the soil. |
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| Keywords: | apple earthworms microorganisms cadmium adsorption desorption |
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