一、土壤颜色每一土壤母质都有它的基本颜色,但随着土壤剖面的发育(主要指化学风化与次生矿物的形成,以及表土有机质积累产生暗棕色或黑色腐殖物质)常有所改变。土壤排水不良和通气性差而导致的氧化还原作用以及因铁质和腐殖质的淋溶和迁移而造成的表土与下层土之间的色泽分异,同样可使土壤颜色进一 First, soil color Each soil parent material has its basic color, but with the development of the soil profile (mainly chemical weathering and the formation of secondary minerals, and the formation of surface organic matter accumulation of dark brown or black humus substances) often change. Redox in poorly drained soils and poor aeration as well as the difference in color between topsoil and subsoil due to leaching and migration of iron and humus can also lead to soil color