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用4种方法测定土壤有效态锰含量，并加以比较和评价，从而确定出最优的土壤有效锰测定方法。研究结果表明，采用一种顺序浸提的方法能比较准确地反映土壤的供锰状况，锰组分及其相应浸提剂为：易溶态锰（0.05 mol/L Ca(NO3)2提取）、弱吸附态锰（pH 8.5, CaDTPA-B4O7 ）、碳酸盐束缚态锰（石灰性土壤，用1.6 mol/L HNO3快速浸提）或专性吸附态锰（非石灰性土壤，pH 4.4，0.05 mol/L Ca(NO3)2 + 0.05 mol/L Cu(NO3)2提取）和氧化锰（pH 2.0，0.1 mol/L NH2OH(HCl）。由盆栽试验辣椒吸收的锰与土壤锰相关分析结果显示，易溶态锰是植物最易吸收的锰，其回归方程为：Y = -14.409 + 21.658 X，r =0.9938**（p≤0.01），Y为辣椒叶片锰含量，X为土壤易溶态锰浓度。
The soil available manganese content was determined by four methods and compared and evaluated to determine the optimal soil available manganese determination method. The results show that the method of sequential extraction can reflect the status of manganese supply in soil more accurately. The manganese component and its corresponding extractants are: Mn (0.05 mol / L Ca (NO3) 2) , Weakly adsorbed manganese (pH 8.5, CaDTPA-B4O7), carbonate bound manganese (calcareous soil, rapidly extracted with 1.6 mol / L HNO3) or specifically adsorbed manganese (non-calcareous soil, pH 4.4, 0.05 mol / L Ca (NO3) 2 + 0.05 mol / L Cu (NO3) 2) and manganese (pH 2.0,0.1 mol / L NH2OH) .The results of correlation analysis between manganese absorbed by pot experiment and soil manganese The results showed that the most soluble manganese was the most easily absorbed manganese in plants. The regression equation was Y = -14.409 + 21.658 X, r = 0.9938 ** (p≤0.01), Y was the content of manganese in pepper leaves, X was the soil soluble Manganese concentration.