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首页> 外文会议>International Plant Nutrition Colloquium; 2005; Beijing >The effects of long-term fertilization on soil potassium supply and its buffer capacity
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The effects of long-term fertilization on soil potassium supply and its buffer capacity

机译：长期施肥对土壤钾素供应及其缓冲能力的影响

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Soil potassium status and availability were studied in a brown soil under long-term fertilization for 24 years. From the investigate Quantity, Intensity and their relations of Soil potassium supplying of 2003. The results showed that ΔK values were very significantly linear correlated with AR°. The potassium supply of soil intensity and capacity changed with long-term applying fertilizer. The treatment application potassium fertilizer has high value than the others and the highest value obtained from the M_2N_1PK treatment, the lowest value obtained from the CK treatment. There were contrary tendency between PBC~K value and the potassium supplying intensity. According to the different AR° value we can conclude that the most soil potassium occupied the edge adsorption position of soil clay mineral in M_2N_1PK, N_1PK and M_2 treatments, bet in others treatment most potassium occupied the adsorption position which among the crystal layer.
机译：在长期施肥24年的棕色土壤中研究了土壤钾素状况和有效性。通过对2003年土壤钾素供应量，强度及其关系的调查，结果表明ΔK值与AR°呈极显着的线性相关。长期施用肥料改变了土壤钾素供应强度和土壤容量。钾肥的施用价值高于其他肥料，M_2N_1PK处理的钾肥施用价值最高，而CK处理的钾肥施用价值最低。 PBC〜K值与钾的供应强度之间存在相反的趋势。根据不同的AR°值，可以得出结论，在M_2N_1PK，N_1PK和M_2处理中，大部分土壤钾占据了黏土矿物的边缘吸附位置，而在其他处理中，多数钾占据了晶体层之间的吸附位置。

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