| Oil shale deposits contain a large number of organic matter and mineral nutrients needed for crop growth,but a higher water-soluble salt content is a key barrier factor in agriculture or horticulture as cultivating substrate.Different desalination treatments(under water/sample ratio 0∶1,1∶1,2∶1,3∶1,4∶1,5∶1,6∶1,7∶1,8∶1,9∶1,10∶1 and water temperature 40℃,50℃,60℃,70℃,80℃,90℃,100℃)were designed in the test,thereby achieving the desired effect.Through measuring oil shale pH,conductivity, the total amount of water-soluble salt and the composition of anion-cation(Cl-,SO2-4,CO2-3,HCO-3,Ca2+,Mg2+,K+,Na+) in different treatments,we wanted to find the proper fixed flushing and measures,also the rule of ions leaching.The results showed that: The efficiency of desalination was higher and water consumption was the lowest in the 5∶1 ratio of water and soil treatment.After being desalinated,the pH of oil shale increased from 5.2 to 6.58,and its salt content reduced from 7.69 g/kg to 1.18 g/kg,with a desalination rate of 84.66%,and its salt content and pH had met the growth requirements of most cultivated crops;If increasing temperature of water properly,the effect of desalination would be better. |