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首页> 外文期刊>土壤圈（英文版） >Effect of Compost Amendment on Heavy Metals, Nitrogen and Phosphorus in a Peat-Based Container Medium
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Effect of Compost Amendment on Heavy Metals, Nitrogen and Phosphorus in a Peat-Based Container Medium

机译：堆肥修正对基于泥炭的容器介质中重金属，氮和磷的影响

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摘要

A laboratory study was conducted to evaluate the effect of compost amendment on mobility and leaching potential of heavy metals, nitrogen (N) and phosphorus (P) from a peat-based commercial container medium containing 700 g kg-1peat, 200 g kg-1 perlite and 100 g kg-1 vermiculite at varying amendment rates of compost (0, 0.25, 0.50, 0.75 and 1.00 LL-1). Increasing compost amendment significantly and linearly increased the pH (P<0.01), the total concentrations of organic carbon (P<0.05), copper (Cu) (P<0.01), cadmium (Cd) (P<0.01), and lead (Pb) (P<0.01), and increased the bulk density (P<0.01) of the medium. The electrical conductivity (EC), and total N and P of the medium increased significantly (P<0.01) and quadratically with increasing compost amendment. The relationship of the C/N ratio of the medium with the compost amendment rate was decreasing, significant (P<0.01) and cubic, while that of the total Zn was increasing, significant (P<0.01) and cubic. Extractable P, NO3-N, and NH4-N increased initially with an increasing compost amendment of up to 0.50 L L-1 and then decreased with further increasing compost rate. Increasing compost rates resulted in a highly significant (P<0.01) and linear increase in total Cd, Cu, and Pb, and a highly significant (P<0.01) and cubic increase in total Zn in the medium. Increasing compost rates also significantly (P<0.01) increased extractable Cu (linearly) and Zn (quadratically), but significantly (P<0.01) decreased extractable Pb (linearly). There was no significant effect of compost amendment on the extractable Cd concentration in the medium. However, with increasing compost rates from 0.25 to 1.00 L L-1, extractability of P, Cd, Cu, Pb and Zn (extractable concentration as a percent of total) was decreased, indicating that compost amendment could lower the leachability of these elements from the medium.
机译：进行了一项实验室研究，以评估堆肥改良剂对含有700 g kg-1豌豆，200 g kg-1的泥炭基商用集装箱培养基中重金属，氮（N）和磷（P）的迁移率和浸出潜力的影响。珍珠岩和100 g kg-1 ver石，其堆肥修正率各不相同（0、0.25、0.50、0.75和1.00 LL-1）。堆肥改良剂的增加显着并线性增加了pH（P <0.01），有机碳（P <0.05），铜（Cu）（P <0.01），镉（Cd）（P <0.01）和铅（P Pb）（P <0.01），并增加了介质的堆积密度（P <0.01）。电堆的电导率（EC）和总N和P显着增加（P <0.01），并随着堆肥修正量的增加呈二次方增长。培养基的C / N比与堆肥修正率之间的关系呈降低，显着（P <0.01）和立方关系，而总锌的C / N比则呈升高，显着（P <0.01）和立方关系。可提取的P，NO3-N和NH4-N最初随着堆肥修正量的增加而增加，最高为0.50 L L-1，然后随着堆肥率的进一步增加而降低。堆肥率的提高导致培养基中Cd，Cu和Pb的总含量显着增加（P <0.01）和线性增加，总Zn的含量显着增加（P <0.01）和立方增加。堆肥率的提高也显着（P <0.01）增加了可提取的铜（线性）和锌（线性），但显着（P <0.01）减少了可提取的Pb（线性）。堆肥改良对培养基中可萃取Cd浓度没有显着影响。但是，随着堆肥率从0.25 L -1升至1.00 L L-1，P，Cd，Cu，Pb和Zn的可萃取性（可萃取浓度占总量的百分比）降低，这表明堆肥改良剂可能降低这些元素的浸出性。媒介。

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  • 来源
    《土壤圈（英文版）》 |2005年第6期|792-796|共5页
  • 作者

    XIA Yi-Ping; HE Zhen-Li; P. J. STOFFELLA; D. V. CALVERT; ZHANG Ming-Kui; YANG Xiao-E; S. B. WILSON;

  • 作者单位

    College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029 (China);

    College of Environmental Science and Natural Resources, Zhejiang University, Hangzhou 310029 (China);

    Indian River Research & Education Center, IFAS, University of Florida, Fort Pierce, Florida (USA);

    Indian River Research & Education Center, IFAS, University of Florida, Fort Pierce, Florida (USA);

    Indian River Research & Education Center, IFAS, University of Florida, Fort Pierce, Florida (USA);

    College of Environmental Science and Natural Resources, Zhejiang University, Hangzhou 310029 (China);

    College of Environmental Science and Natural Resources, Zhejiang University, Hangzhou 310029 (China);

    Indian River Research & Education Center, IFAS, University of Florida, Fort Pierce, Florida (USA);

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 农业基础科学;
  • 关键词

    compost amendment; heavy metals; nitrate; peat-based medium; phosphate;

    机译：堆肥改良剂;重金属;硝酸盐;豌豆基培养基;磷酸盐;
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