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通过对安徽省不同母质发育的稻田土壤的采样分析,研究了水稻土中不同形态锰含量及其与土壤性质的关系。研究结果表明:供试水稻土全锰含量低于全国平均水平,含量在191.7～805.0 mg kg-1之间,平均为375.0 mg kg-1,有效锰含量平均为25.4 mg kg-1。不同锰形态含量有较大差异,其占全锰比例顺序为残渣态>铁锰氧化态>有机态、可交换态>碳酸盐结合态,Tessier法与BCR法锰形态分级结果有明显的相关性。各形态锰以有机态锰、可交换态锰、碳酸盐结合态锰、铁锰氧化态锰活性较高,与有效锰之间呈现显著或极显著正相关关系。土壤pH值、有机质和粘粒含量是影响土壤锰形态和含量的主要因素。
Through the sampling analysis of paddy soil with different parent materials in Anhui Province, the relationship between different forms of manganese in paddy soil and soil properties was studied. The results showed that the content of total manganese in the paddy soils under test was lower than the national average level, ranging from 191.7 to 805.0 mg kg-1, with an average of 375.0 mg kg-1 and an average effective manganese content of 25.4 mg kg-1. The results showed that there were significant differences in the contents of different forms of manganese. The order of total manganese was residual state> ferric-manganese oxidation state> organic state, exchangeable state> carbonate-bound state, Tessier method and BCR manganese morphology grading results Sex. Manganese in all forms of manganese with organic manganese, exchangeable manganese, carbonate-bound manganese, manganese manganese oxide manganese oxidation activity was relatively high and significant positive or significant positive correlation between manganese. Soil pH, organic matter and clay content are the main factors affecting the form and content of manganese in soil.