THRESHOLD INDEXES OF SODIUM PEPTIZATION CAPACITY IN SOILS

The results of a model experiment on the study of peptization capacity of clay particles in the solonetzic horizon are considered, depending on the solution concentration and exchangeable sodium content for dif ferent chemical types of salinization. The response surface is describ ed, and an equation is developed that relates the peptizability with t he electrical conductivity of a solution and the exchangable sodium co ntent. Differences in clay peptization are found for sulfate and chlor ide solutions.