Cjaracterostocs of Soluble and Exchangeable Acidity in an Extremely Acidified Acid Sulfate Soil

摘要

An extremely acidified acid sulfate soil (ASS) was investigated to characteracterise its soluble and exchangeable acidity. The results showed thawt soluble acidity of a sample determined by titration with a KOH solution was much significantly greater than that indicated by pH measured using a pH measured using a pH meater, particularly for the extremely acidic soil samples.