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FANG Li, YUYuan-chun, YUJian, ZHANG Ping-jiu, ZHUQiang-gen. Role of low molecular weight organic acids in mobilization of forest soil phosphorus[J]. Journal of Zhejiang A&F University, 2007, 24(1): 28-32.
Citation: FANG Li, YUYuan-chun, YUJian, ZHANG Ping-jiu, ZHUQiang-gen. Role of low molecular weight organic acids in mobilization of forest soil phosphorus[J]. Journal of Zhejiang A&F University, 2007, 24(1): 28-32.

Role of low molecular weight organic acids in mobilization of forest soil phosphorus

Funds:

国家自然科学基金资助项目(30271069);国家教育部留学回国人员科研启动基金资助项目;安徽师范大学地理特优强专业资助项目

  • Received Date: 2006-01-09
  • Rev Recd Date: 2006-05-24
  • Publish Date: 2007-02-20
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Role of low molecular weight organic acids in mobilization of forest soil phosphorus

Funds:

国家自然科学基金资助项目(30271069);国家教育部留学回国人员科研启动基金资助项目;安徽师范大学地理特优强专业资助项目

Abstract: Lowmolecularweight(LMW)organic acids can release insoluble phosphorus in the soils. The function of four LMW organic acids to mobilize inert phosphorus in acidic soils of mason pine(Pinus massoniana) plantation and Chinese fir(Cunninghamia lanceoata)plantationwere studied by chemical extractionmethods. The main results indicate that the effets of LMW organic acids on the release of inert phosphorus is significant in all tested forest soils, especially in dark red soils. The ability of the four LMW organic acids in this mobilization is ranked in the following order: citric acid oxalic acid ormixed acid(including the three acids) tartaric acid.This agreeswith the order of the logKAlvalues of the acids. Moreover, with an increase in the acid concentration within a certain range, the activation of organic acid becomes moew potent. Compared with previous studies,LMWorganic acids have a stronger mobilization effect on soil phosphorus in agrosystem soils than in forest soils.[Ch, 2 fig. 2 tab. 11 ref.]

FANG Li, YUYuan-chun, YUJian, ZHANG Ping-jiu, ZHUQiang-gen. Role of low molecular weight organic acids in mobilization of forest soil phosphorus[J]. Journal of Zhejiang A&F University, 2007, 24(1): 28-32.
Citation: FANG Li, YUYuan-chun, YUJian, ZHANG Ping-jiu, ZHUQiang-gen. Role of low molecular weight organic acids in mobilization of forest soil phosphorus[J]. Journal of Zhejiang A&F University, 2007, 24(1): 28-32.

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