Other salts that contribute to soil salinity include Na+, CO3-2, and HCO3–. Typically, NO3– and K+ are not high in saline soils, while carbonates are mostly present in alkaline soils. While plants ...

Different agricultural approaches are needed for three major soil types found in the country: saline soils in the north, black soils in the northeast, and red and yellow soils in the south.