spreading to husk on the soil

The salinity of soil refers to the amount of salt in the soil.

Soil sallination is when soil becomes more salty as a result of water movement in the soil usually as a result of irrigation.

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salination of rivers

the soil is composed of fragments each capable of making electro-chemical bonds with ions in the soil wate solution. when salination happens the sodium drives away the other ions such as pottasium and phosphorus. the soil particles, now "covered" with sodium, are repeled from one another which ruins the soil structure