Coastal
saline soil is the soil which its amount of salinity
is high enough to be dangerous for economic crops. Such
soil is found in the coastal where the sea is reached.
How to observe coastal saline soil
1.
The area is not far for the coast and it had been reached
by the sea.
2.
Find white salt deposit scattered in soil surface or
the soil texture is broken. Since consisting of Sodium
carbonate, the soil amount increase when it is wet.
In some area , the soil is dense and the area is left
empty.
3.
There are salt tolerant plants such as Myrsinaceae,
mangrove, atap, sea blite, Sonneratia, salt tolerant
grass growing in the area.
4.
Some of plants in the area are died because of soil
salinity. Its leaves are burned and its appearance is
small.
5.
If the taste of water and soil is brackish or the water
becomes brown, it is dangerous for plant.
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Reclamation of coastal saline soil
1.
Reclamation the area for permanent planting
1.1
Build the dike to prevent the sea and keep fresh water.
There should be the way to drain water.
1.2
Dig the waterway for the drainage. In the lowland, draw
water for the drainage. Add chemical if the soil does
not allow water to percolate.
1.3
There should be much rainfall in the reclaimed area.
Or else, the water is available for planting.
1.4
Leach the soil with water and select salt tolerant plant
for growing.
In
this method, it takes much money to build polder and
it is in the time of experiment. The problem is the
availability of water source for planting.
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