Effective against saline water by manual methods
Use small tools to dig small ditches in the field so that saline water settles down the ditches; The organization discharges water into the river at low tide and proactivelyThe Mekong Delta provinces are penetrated by saltwater 70km deep
According to Southern Institute of Water Resources Research, from mid to late March 2012, saline water with salinity of 0.1 ‰ will penetrate 70km deep in the Mekong Delta