Khunsombat khong nam bon phiu din lae nam tai din nai boriwen din prieo.
Chakkaphong Choemsiri | Praphit Saengthong | Kasemsi Sapson
In order to ascertain the quality of water in acid sulfate soils, water sample from irrigation canals, surface water, and ground water at 50-100 cm depth were collected and analysed for physical and chemical properties. The result are that the soluble salt contents of the surface water was higher than that in ground water and the soluble salt contents on the ground water were highly correlated with the depth of water sampling. It was noteworthy that the content of the base components from the irrigation canals at Nongsuar and Thanyaburi were rather high. Its effect as neutralizing agent on H+ ions was enormous. The bicarbonate contents of the water at those areas were equivalent to 274 kg/ha of pure slaked lime for each cropping. The content of cations in the ground water was matched by the content of sulfate. Ferrous in ground water at Nongsuar was higher than that at Ongkharak which indicated that the accumulation of pyrite at Nongsuar was also higher and the aluminum content in the soil of these two areas are likely at the same levels.
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