(= The acid and alkali buffer capacity and titration curve of soil(Studied by yourself! (yy)Affect the factors of acid or alkali buffering of soil 1. Soil inorganic colloid 2. Soil texture 3. Soil organIc matters 三、 The redox buffering of soil (Studied by yourself!!)（三）The acid and alkali buffer capacity and titration curve of soil (Studied by yourself!!) (四) Affect the factors of acid or alkali buffering of soil 1．Soil inorganic colloid 2．Soil texture 3. Soil organic matters 三、The redox buffering of soil (Studied by yourself!!)