Cat No5500 soil salinity sensors were used in a field plot experiment to monitoring the variation of saltiness of soil solution with different depths.Meidina

a microorganism fertilizer

applied in the field plots.The results were as follows:Being applied the Meidina

a larger amount of salt would be leached from the surface soil and soil underground 10cm and 30cm during irrigation time.Also being applied the Meidina

a fewer amount of salt would be accumulated in surface soil and soil underground 10cm and 30cm during no irrigation time.The variation of saltiness of soil solution underground 60cm was less than of above layers.And applying Meidina to farmland would not influence the saltiness of the soil solution underground 60cm.