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应用生态学报 ›› 1999, Vol. 10 ›› Issue (5): 576-578.

• 研究论文 • 上一篇    下一篇

白浆土植物系统营养物质转化机制及其有效性研究Ⅴ.有机物对磷根际有效性的影响

吴龙华, 高子勤   

  1. 中国科学院沈阳应用生态研究所, 沈阳110015
  • 收稿日期:1998-11-02 修回日期:1999-04-29 出版日期:1999-09-25 发布日期:1999-09-25
  • 基金资助:

    国家自然科学基金资助项目(4947143).

Transformation mechanism and availability of mutrients in albic soil plant system Ⅴ Effect of organic material on phosphorus availability in soil wheat rhizosphere system

Wu Longhua, Gao Ziqin   

  1. Institute of Applied Ecology, Academia Simica, Shenyang 110015
  • Received:1998-11-02 Revised:1999-04-29 Online:1999-09-25 Published:1999-09-25

摘要: 采用根盒试验研究了施用紫花苜蓿腐解物对白浆土小麦根际P素形态转化、有效性及小麦植株P素吸收的影响。结果表明,施用有机物料使土壤有效磷显着上升,铝磷、铁磷含量也显着升高,且培养时间越长,效果越明显。小麦植株含P量明显上升,且与非根际土壤铝磷、铁磷的变化显着相关.

关键词: 紫花苜蓿, 白浆土, 磷, 根际效应, 多元统计分析, 非度量多维标度法, 平均营养级指数, 群落动态, 相对重要性指数, 聚类分析

Abstract: Rhizo box experiment showed that soil available Pwas significantly increased when decayed alfalfa was added, and soil Al Pand Fe Pwere also enhanced strikingly. The effects were enlarged when time extending. Pconcentration in wheat plants was increased significantly, and clearly related to the change of soil Al Pand Fe Pin non rhizosphere.

Key words: Alfalfa, Albic soil, Phosphorus, Rhizospheric effect, mean trophic level index, cluster analysis, community dynamics, index of relative importance, non-metric multidimentional scaling, multivariate statistical analysis