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应用生态学报 ›› 1999, Vol. 10 ›› Issue (4): 415-418.

• 研究论文 • 上一篇    下一篇

石灰性紫色土中锌的形态分布及其影响因素

高美荣, 朱波, 蒋明富   

  1. 中国科学院-水利部成都山地灾害与环境研究所, 成都 610041
  • 收稿日期:1998-10-05 修回日期:1998-12-18 出版日期:1999-07-25 发布日期:1999-07-25
  • 通讯作者: 高美荣,女,29岁,助研,从事土壤肥力与农业生态研究,发表论文多篇.
  • 基金资助:

    中国科学院“八·五”重大项目与中国科学院重点项目(KZ952-J1-217).

Distribution of zinc forms and its influence factors in calcareous purple soils

Gao Meirong, Zhu Bo, Jiang Mingfu   

  1. Institute of Mountain Hazards and Environment, Academia Sinica & Ministry of Water Resources, Chengdu 610041
  • Received:1998-10-05 Revised:1998-12-18 Online:1999-07-25 Published:1999-07-25

摘要: 为探明川中丘陵分布广泛的石灰性紫色土的缺Zn机理,应用化学连续浸提法对30个样本提取了8种形态的Zn,采用最优组合变量回归分析和相关分析对数据进行处理。结果表明,石灰性紫色土中各形态Zn的分配差异显着;土壤pH、质地、有机质、碳酸盐对Zn的分布起着不同程度的作用,特别是碳酸盐,不仅间接增强土壤氧化物和粘土矿物对Zn的吸附,其本身对Zn的吸附和固定作用(占全Zn2.70%)较为重要。土壤pH、有机质是影响有效态Zn的主要因素.

关键词: 石灰性紫色土, Zn形态, 影响因素

Abstract: In order to approach the mechanism of zinc deficiency in the calcareous purple soil widely distributed in hilly regions of central Sichuan Province, eight forms of zinc were determined from 30 samples by sequential chemical extraction method and the data were treated by optimum regression and correlation analyses. There were remarkable differences among all forms of zinc, which were influenced by soil pH, texture, organic matter and carbonates. The carbonates not only enhanced the adsorption of zinc by soil oxides and clay minerals, but also adsorbed and immobilized it (2.70% of total Zn) by themselves. Soil pHand organic matter were the major factors affecting available zinc.

Key words: Calcareous purple soil, Zinc form, Influence factors