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在野外采样、室内分析与统计的基础上,对陕北靖边县北部风沙区土壤有效态微量元素的含量及分布进行了研究。结果表明,该地区土壤中B,Cu,Zn,Fe和Mn等微量元素有效态含量的平均值分别为:0.421 mg/kg,0.505 mg/kg,0.582 mg/kg,7.092 mg/kg和7.251 mg/kg,它们的变幅分别在2.582~0.022 mg/kg,1.194~0.158mg/kg,3.944~0.096 mg/kg,26.08~2.4 mg/kg和13.39~2.082 mg/kg之间;在水平方向上,B,Cu,Zn和Mn的含量呈由南向北增高的趋势,Fe则表现出由西向东有所增加;土壤垂直剖面中,0~20 cm的耕层B,Cu,Zn,Fe和Mn明显高于20~40 cm和40~60 cm土层的含量。
Based on the field sampling, indoor analysis and statistics, the content and distribution of available soil microelements in the sand-blown sandy area in north of Jingbian County, northern Shaanxi Province were studied. The results showed that the average contents of trace elements such as B, Cu, Zn, Fe and Mn in soils were 0.421 mg / kg, 0.505 mg / kg, 0.582 mg / kg, 7.092 mg / kg and 7.251 mg / kg, respectively, and their amplitudes were in the range of 2.582-0.022 mg / kg, 1.194-0.1580 mg / kg, 3.944-0.096 mg / kg, 26.08-2.4 mg / kg and 13.39-2.082 mg / kg, respectively. , B, Cu, Zn and Mn increased from south to north and Fe increased from west to east. In the vertical section of soil, 0-20 cm topsoil B, Cu, Zn, Fe and Mn was significantly higher than that of 20 ~ 40 cm and 40 ~ 60 cm soil layers.