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研究论文

摘要：研究了土壤对锌的缓冲性能,讨论了缓冲能力随土壤固相上的锌量以及溶液中锌离子浓度变化的规律;缓冲能力与土壤中几种主要组分(有机质、CaCO₃和氧化物)的关系;温度和pH对土壤缓冲能力的影响,结果表明,随着土壤固相上锌量增加,溶液中锌离子浓度的变大,土壤对锌的缓冲能力明显降低。温度和pn升高,都增加土壤对锌的缓冲能力。石灰性土壤中几种主要组分对锌的缓冲能力的影响顺序为:CaCO₃>氧化物>有机质。

Abstract：Soil buffering capacity to zinc in calcareous soils was studied. The effects of zinc contentin solid phase,zinc concentration in solution, pH, temperature,and soil constituents on soilbuffering capacity to zinc were also investigated.The experimental results showed that thesoil buffering capacity to zinc,decreased with increasing in zinc contents in both solid andliquid phases,and increased with increasing pH and temperature. The effect of soil con-stituents was in the following order:CaCO₃>metal oxides>organic matter。