Due to the progress of aquaculture along the coastal regions, cultivated lands also infected with saline conditions.Now productivity from these soils was reduced. Application of bio fertilizers help to reclaim the soils some extent.
Salt-affected soils of coastal regions are saline by nature. Leaching out the excessive salts from the plough-layer/rooting zone of soil by fresh water (rainwater) is the most effective means of amelioration. How much fresh water is needed to leach the soluble salts out of the soil, can be determined by simple 'leaching requirement' test.
There are several other management strategies/technologies to cope with cropping in salt-affected soils, like selection of salt tolerant crops/varieties, use of organic manures, ridge & furrow method of planting, etc.
Unfortunately, regarding soil salinity and its salinization, no matter the ways is its source, seems that nothing would be ”simple”. :)
In addition to the very good answers given by above mentioned colleagues and suggested references, please find and use the material: Saline Agriculture. Salt-Tolerant Plants for developing countries.
It refers on plant species able or susceptible to be used/cultivated on salt-affected areas. Other ”classic” means in order to desalinate or reduce soil salinity are: mechanical (drainage techniques, salt leaching, etc..), chemical treatments in order to neutralize increased salinity concentration and improve nutritional value of salt-affected areas.
However, choosing the right strategy for a salt-affected soil should consider all the involved factors of the region and soil and the modern approaches are focused on natural ways, mainly related to salt tolerant plants with an economic potential or/and species able to accumulate large amounts of salts in their tissues (hyper-accumulators).
Fortunately, this issue is quite well documented and you will surely find relevant literature.
Thank you all for your valuable information, we are planing to raise some important halophytes in these saline soils for several purposes such as convert the waste soils into productive one, to increase socio- economic conditions of the local inhabitants through the commercial cultivation. Is it feasible???