四川农业大学学报 ›› 1994, Vol. 12 ›› Issue (01): 1-5.doi: 10.16036/j.issn.1000-2650.1994.01.01

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石灰性土壤在不同利用方式下FeCu的形态研究

刘本洪, 吕世华, 许怡心   

  1. 四川省农科院土肥所, 成都市 610066
  • 收稿日期:1993-04-20 出版日期:1994-03-31 发布日期:2017-04-22

THE FORM OF Fe AND Cu CALCAREOUS SOIL UNDER DIFFERENT FARMING FORMS

Liu Benhong, et al   

  1. Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Science, Chengdu china zipcode 610066
  • Received:1993-04-20 Online:1994-03-31 Published:2017-04-22

摘要: 采用连续浸提的分析方法研究了石灰性土壤在不同利用方式下铁、铜的形态组成及其与有效量之间的关系。结果表明,土壤中铁主要以RES-Fe和R2O3-Fe形态存在;铜主要以RES-Cu形态存在,其次是FXC-Cu和R2O3-Cu。土壤中RES-Fe的相对含量旱地土壤高于水旱轮作土壤,而水旱轮作土壤又高于冬水田,R2O3-Fe、CA-Fe、OM-Fe都是旱地土壤低,冬水田最高。土壤中WS-Cu、EXC-Cu和ERMn-Cu三种形态含量:冬水田相对最高,水旱轮作次之,旱地最低。有效铁与CA-Fe和R2O3-Fe呈显著正相关,说明冬水田供铁较充足,而旱地土壤易于缺铁。有效铜与EXC-Cu和ERMn-Cu呈极显著正相关,说明冬水田供铜较充足,旱土土壤则相对偏低。

关键词: 石灰性土壤, 铁, 铜、利用方式, 形态, 土壤耕作, 土壤矿物

Abstract: Using continuous extra ctionmethods, the relationship between the forms of Fe、Cu and their available content of calcareous soil under different farming forms were analyzed.The result showed as the following:the main existence forms of Fe in soil were RES Fe and R2O3-Fe, and those of Cu in soil were RES-Cu, the secondary was EXC-Cu, and R2O3 Cu, The relative content of RES-Cu was that in dryland water-dry rotation soil > winter-water field.R2O3-Fe、CA-Fe、om-Fe content in dryland soil was the lowest, while that in winter water field was the highest.The WS Cu、EXC-Cu and ERMn Cu content was that in winter water field > water-dry rotation soil > dryland soil, Available Fe and CA-Fe、R2O3-Fe in soil had significant positive relationship.This indicated winter-water field could provide sufficient Fe while it was up to be of Fe deficiencies in dryland soil.It was highly significant positive relationship between available Cu and EXC-Cu、ERMn Cu in soil.It indicated the winter water field could provide sufficientcu, while the dryland soil provided relatively less Cu.

Key words: CALCAREOUS SOIL IRON, COPPER, FARMING FORMS, FORM, SOIL CULTIVATION, SOIL MINERALS

中图分类号: 

  • S155.31