Abstract:

In order to provide a theoretical basis for salt-water management of the takyric solonetz farmlands, in this study, the depth of groundwater was measured by rope method, mineralization was detected by conductivity meter, pH was determined by multi-parameter meter and salt ions were measured by titration method. The variation of the depth, mineralization and salt ion of groundwater of takyric solonetz farmlands were compared and analyzed. The results showed that the horizontal changes of the depth of groundwater and mineralization were great, and the variation coefficients were 22.2% and 38.9%, respectively. The horizontal variations of salt ion Na⁺, Cl^-, and HCO₃^- were relatively great, while Ca²⁺ and K⁺ had less variation. Groundwater salt ions were mainly Na⁺, Cl^–, SO₄^2- and HCO₃^-. Groundwater depth became shallow year by year, pH and mineralization became smaller year by year. These results provide a technical support for salt-water management of the takyric solonetz farmlands, and have important scientific value for environmental protection and agricultural irrigation in arid areas.

Key words: taryric solonetz land, salt-water control, groundwater, interannual, depth, mineralization