内蒙古西部地区典型土壤理化性质的测定

目的]测定内蒙古西部地区典型土壤的理化性质。方法]现场采集土样,在实验室进行理化性质的测定。土壤中各种离子含量及pH值依据《材料土壤腐蚀试验方法》进行测定。结果]内蒙古西部地区5种土壤中都不含CO32-,阿盟地区土壤浸出液中HCO3-含量最高,为0.078 08%;巴盟地区土壤的电导率及Cl-和SO42-含量最高,分别为2.74μS/cm、0.108 92%、0.195 84%,pH值最低,为7.82;巴盟地区土壤电导率是包头土壤的17.125倍。阿盟、伊盟、乌盟和包头地区土壤的电导率差别不大;阿盟地区土壤呈强碱性,pH值为8.6,其余地区土壤均呈微碱性。结论]内蒙古西部地区5种土壤的理化性质存在较大差异。

Determination of Typical Soil Physical and Chemical Properties in Western Region of Inner Mongolia

Objective] The aim was to determine the physical and chemical properties of typical soil in the western region of Inner Mongolia.Method] The soil samples were selected in field and their physical and chemical properties were determined in lab.The various ions content and pH value in soil were determined according to The Experiment Methods for the Soil Corrosion of Material.Result] The 5 soils in western region of Inner Mongolia all did not contain CO32-.The HCO3 content in the soil extract of A'KeZao league was the highest,being 0.078 08%.In the soil of Bayenaoer league region,the conductivity and contents of Cland SO42-in soil were the highest,being 2.74 μS/cm,0.108 92%,0.195 84%.Its pH value was the lowest,being 7.82.The soil conductivity in Bayenaoer league region was 17.125 times of that in Baotou area.The conductivities of soil in A'KeZao league,WuLanChaBu League and Baotou area were similar.The soil in A'KeZao league was strong basic and its pH value was 8.6.The soils in other regions were slightly alkaline.Conclusion] Soil physical and chemical properties of 5 kinds of soil in the western region of Inner Mongolia had big differences.