有机酸对菜地土壤磷素活化的影响
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S154.1

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Effect of organic acids on the activation of phosphorus in vegetable garden soils
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    摘要:

    实验室模拟研究两种有机酸(柠檬酸、草酸)对菜地土壤磷素活化的影响。结果表明:有机酸对菜地土壤磷的活化效果较明显,且随有机酸浓度的增加,土壤磷活化效果越显著。两种有机酸的活化效果为草酸>柠檬酸。有机酸对磷的活化效果与土壤Olsen- P含量、有机质含量呈显著正相关关系。土壤中有效磷的释放随着有机酸浸提时间的延长而逐渐增加。

    Abstract:

    The increasing demand for food production throughout the world has been exerting growing pressure on mineral nutrient cycling in agricultural ecosystems. Lack of available phosphorus(P), for plant growth is a widespread limitation to agricultural production. It has been reported that only 8% of 500 soil samples, collected from 42 countries were classified as not deficient in phosphorus. The management of phosphorus nutrition in soil is one of the important agricultural practices. However, excessive applicat...

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梁玉英,黄益宗,孟凡乔,朱永官.有机酸对菜地土壤磷素活化的影响.生态学报,2005,25(5):1171~1177

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