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为了探讨几种土壤类型对碱的缓冲特征,笔者采用电位法测定土壤碱缓冲能力大小,对几种类型土壤对碱的缓冲特征及影响因素进行了初步研究。结果表明:几种类型土壤对碱的缓冲能力大小依次为黄棕壤>水稻土>砂姜黑土>潮土。不同肥力砂姜黑土和水稻土对碱溶液的缓冲能力均是高肥力>中肥力>低肥力。不同有机质含量土壤对碱溶液的缓冲能力均是高量有基质>中量有机质>对照。同一类型土壤对碱缓冲能力高低与肥力高低和有机质含量高低成正比。
In order to investigate the buffering characteristics of alkali in several soil types, the authors used the potential method to determine the alkali buffering capacity of soils, and studied the buffering characteristics and influencing factors of alkali in several soil types. The results showed that the buffering capacity of several types of soils was yellow brown soil> paddy soil> saprolite black soil> alluvial soil. The buffering ability of sago black soil and paddy soil with different fertility to alkali solution were high fertility> medium fertility> low fertility. Different organic matter content of soil buffer capacity of alkali solution are high amount of matrix> the amount of organic matter> control. The same type of soil buffer capacity of alkali with the level of fertility and organic matter content is proportional to.