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本文研究了耕作制对紫色水稻土铁、锰、铜、锌的形态及其相互关系的影响。结果表明,稻田垄作(厢作)或水早轮作,土壤水溶态、代换态、易还原锰结合态、碳酸盐结合态,有机质结合态和二三氧化物(无定形铁铝)结合态铁、锰、铜的数量和比例均比对照有下降。残渣态(晶形矿物结合态)铁、锰、铜相对增多,即矿物固定增强;代换态和易还原锰结合态锌呈不同程度增加,二三氧化物结合态和有机质结合态显著下降。土壤铁、铜、锰的可结性下降,锌的可结性增加。有机质、易还原锰和无定形铁对土壤铁、锰、铜、锌具明显的吸附富集效应。
This paper studied the effects of tillage on the morphologies and their relationships of iron, manganese, copper and zinc in purple paddy soils. The results showed that the combination of paddy field or waterwheel rotation, soil water soluble, substitutional, easily reduced manganese bound, carbonate bound, organic bound and dioxo (amorphous iron-aluminum) bound The quantity and proportion of iron, manganese and copper both decreased compared with the control. Residue (crystalline mineral bound) iron, manganese, copper relative increase, that mineral fixed enhanced; substituting and easily reduced manganese bound zinc increased to varying degrees, two oxide binding state and organic matter binding state decreased significantly. Soil iron, copper, manganese decreased the knot, zinc knot increases. Organic matter, easily reduced manganese and amorphous iron on the soil iron, manganese, copper, zinc adsorption enrichment effect.