四川农业大学学报 ›› 1993, Vol. 11 ›› Issue (02): 301-304.doi: 10.16036/j.issn.1000-2650.1993.02.018

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亚铁(Fe2+)在石灰性紫色土中的形态转化

吕世华, 刘本洪, 胡思农, 向在筠, 周忠远   

  1. 四川省农科院土肥所 中科院成都分院测试中心, 成都市 610015
  • 收稿日期:1992-11-26 出版日期:1993-06-30 发布日期:2017-04-22
  • 基金资助:
    国家自然科学基金

THE TRAHSFORMATION OF Fe2+ IN CALCARIOUS PURPLE SOIL

Lu Sihua, et al   

  1. Soil and Fertilizer Institute, Sichuan Academy of Agricultural sciences, Chengdu China, Zip Code 610066
  • Received:1992-11-26 Online:1993-06-30 Published:2017-04-22

摘要: 采用马义兵等修正的连续浸提分析方法研究了石灰性紫色土铁的形态组成及两种铁源的铁在土壤中的形态转化。结果表明,石灰性紫色土中的欣主要以残渣态存在,占全欣的97~98%,次为三二氧化物结合态,其它形态均很少。施入石灰性紫色土中的Fe2+主要向交换态、碳酸盐结合态、三二氧化物结合态和残渣态转化。YATE-Fe易以交换态存在,而FeSO4中的Fe易以三二氧化物结合态存在,且施入的Fe2-主要以残渣态和三二氧化物存在,两者合计占66.5~88.6%,表明Fe2-施入石灰性紫色土易被氧化固定。

关键词: 铁, 形态, 转化, 石灰性紫色土, 石灰性土壤, 硝化作用, 紫色土

Abstract: The form and composition of iron in calcarious purple soil and the transformation of Fe2+ from two origins were studied by the modified continual extraction analyzing method of Ma Yibin et al. The results showed that the main existent form of iron in calcarious purple soil was the residual form (RES-Fe, which was 97-98% of the total iron, that the secondary was Al-oxide&Fe-oxide bound form (R203FE) and there were few other forms. Fe2+ added into the calcarious purple soil mainly changde into exchangable form (EXC-Fe), carbonate bound form (CA-Fe. R203-Fe and RES-Fe. YATE-Fe is apt to exist in EXC-Fe. but FeSO4-Fe is apt to exist in R203-Fe, and Fe2- appliedmainly existed in RES-Fe and R203-Fe and the two forms were 66.5-88.6%. It was indicated that when applied to calcarious purple soil Fe2+ was easy to be oxided and fixed.

Key words: IRON, FORM, TRANSFORM, CALCARIOUS PURPLE SOIL, CALCAREOUS SOILS, NITRIFICATION, PURPLP SOILS

中图分类号: 

  • S155.31