土壤生物在土壤磷有效化中的作用
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ROLES OF SOIL ORGANISMS ON THE ENHANCEMENT OF PLANT AVAILABILITY OF SOIL PHOSPHORUS
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    摘要:

    本文概述了磷被土壤组分固定的机制,详述了土壤微生物、根、菌根和蚯蚓在提高土壤磷植物有效性中起的作用。土壤生物对磷的活化作用主要机制为;通过产生质子和有机酸溶解不溶态无机磷,通过分泌磷酸酶水解有机磷,这种作用受土壤供磷与植物对磷需求间平衡的调控。最后讨论了难溶性矿物磷肥和有机磷肥的应用价值,提出通过增大土壤生物的群体和活性,使土壤供磷与植物需磷达到和谐同步的设想。

    Abstract:

    In this paper, the authors summarized briefly the retention of phosphorus by soil constituents. Roles of soil.microorganisms, plant roots, mycorrhizae and earthworms in the enhancement of plant availability of soil phosphorus are reviewed. The mobilization of soil phosphorus by soil biota involved mainly solubilization of insoluble inorganic phosphorus by excretion of protons and organic acids, and hydrolysis of organic phosphorus by phosphatases. The processes of phosphorus mobilization were regulated by the equilibrium between soil phosphorus supply and plant P demand. In the last part, possibilities of alternatives of P fertilizers are discussed. It was suggested that by increasing soil biota population and activity soil phosphorus supply could be in sychronization with plant phosphorus demand.

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张宝贵,李贵桐.土壤生物在土壤磷有效化中的作用[J].土壤学报,1998,35(1):104-111. DOI:10.11766/trxb199508270115 Zhang Bangui, Li Gui-tong. ROLES OF SOIL ORGANISMS ON THE ENHANCEMENT OF PLANT AVAILABILITY OF SOIL PHOSPHORUS[J]. Acta Pedologica Sinica,1998,35(1):104-111.

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  • 收稿日期:1995-08-27
  • 最后修改日期:1997-09-09
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  • 在线发布日期: 2013-02-25
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