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本文通过野外调查采样分析研究了吉林中部不同亚类黑土中硼、钼的含量及垂直分布规律,分析了成土母质、成土过程、成土环境对各微量元素含量及分布的影响。结果表明:红土母质中全钼及有效钼含量均高于黄土母质,而黄土母质中全硼含量较高。全硼在草甸黑土中表现出很强的生物富集特征,其余各剖面表现出较明显的淋溶特征;有效硼表现出生物累积并且从上到下逐渐减小,与有机质之间呈显著正相关。全钼在草甸黑土、德惠典型黑土中有淋溶作用较弱的特点,在长春地区典型黑土中为表层富集,淋溶作用较强的特点;有效钼与全钼变化规律一致,白浆化黑土中有效钼的表层富集和淋溶程度最强。
In this paper, the contents of boron and molybdenum in different sub-types of black soils in central Jilin and the vertical distribution were studied through field sampling and analysis. The effects of soil-forming parent materials, soil forming process and soil forming conditions on the contents and distribution of trace elements were analyzed. The results showed that the content of total molybdenum and available molybdenum in red soils were higher than that of loess parent materials, while the content of total boron in loess parent materials was higher. Total boron in the meadow black soil showed a strong bio-enrichment characteristics, and the remaining sections showed obvious leaching characteristics; available boron showed bioaccumulation and gradually decreased from top to bottom, and organic matter was significant Positive correlation. All molybdenum in the meadow black soil, Dehui typical black soil leaching weak characteristics of typical black soil in Changchun area surface enrichment, strong leaching; effective molybdenum and total molybdenum changes in the law, white and white Available molybdenum surface layer of black soil enrichment and leaching the strongest.