Chemical Processes Occurring In The Process Of Gypsum Sodic Soils And Physical Processes

A lot of research work of improvement with gypsum had been done by theformer before, but there still are many questions that need to be resolved. Itis hard to make theoretical research for great variations of salts andaIkalinity So gather the representative alkaline soil into soil column invarious styles for model test inside and analyze the eight ions C0₃^2-,HC0₃^-,Cl^-,SO₄^2-,Ca²⁺,Mg²⁺,K⁺+Na⁺ in the filtrate through chemicalexperiments. Exert the specu1ative analytical methods andcompresensive points method to study the complicated physical andchemical processes happened in soil column. Make a prec lminaryresearch in theory on some respects such as some applying methodsof gypsum, different irragat ion quotas, irragation quotas in turn,the effects of many kinds of cultivated measares and seasonal actorsand so on. Clarify eleven chemical reactions that exist the coursesof the improvement of alkaline soil with gypsum and valuate the allkinds of techniques and measures to guard the-improvement work ofalkaline soil in field.