PHYSICAL PROPERTIES CHANGING OF BARABINSK LOWLAND SALINE SOILS (SOLONETZ) WHEN LONG-TERM GYPSUM ACTIVITY
The research in microplot trials which were grounded 20 years ago at cortical saline soils for studying long-term activity of gypsum different doses single applying and its influence on soil properties has been carried out since 2006. Physical properties of saline soils improve significantly under the influence of ameliorants. They are efficient for agricultural plants cultivating. Such a pattern (regularity) is typical for low-sodium saline soils and for high-sodium saline soils. Improving of physical properties is observed at the whole profile which is 100 cm and it is especially revealed in low-sodium saline soils.