تطبيق المفاهيم الحديثة في غسل الترب المتأثرة بالأملاح في محافظة نينوى

الملخص EN

The research aims to apply the CROSS, MACR SAR system in leaching two sites of by salts affected soils from Nineveh Governorate.

(Tal Samir) within the northern irrigation project of Al-Jazeera in Rabia district within the geographical location (36° 4302.7 N 42° 0936.5E) and (Al-Hayani) in the district of Tal Abta within the geographical location (35° 5131, 9N42° 3157.8E within the rank of Aridisols and below the sub order Orthids and the great group Saliorthids took unexcited soil Soil columns by the Core Sample method with a diameter (0.105 m and a depth of (0.5 m).

They were restored by the continues flow method in a laboratory using Tigris water.

The outflow filtrates were collected in batches every ten minutes with recording the volume down to reach the pore volumes.

(1, 2, 3, 4, 5, 6), in which the salinity and concentrations of ionic species (Na+, K+, Ca+2, Mg+2) were estimated, which were expressed in terms of (SAR, MCAR and CROSS).

The results indicated that the leaching process led It reduced the ionic content of sodium by 93% -72% , potassium (93-73% ), calcium (47-66% ), and magnesium ion (84-78% ) in the two soils, respectively, And that the flow of the equilibrium filtrates water led to an increase in the accumulated quantities of Leached salts and dissolved ions in a path consisting of two stages.

(-1.265) minutes-1 for the SAR index and from (-1.660) to (-1.211) minutes-1 for the CROSS index and from (-1.056) to (-1.255) minutes-1 for the MCAR index for the Tel Abta and Rabia sites respectively, with a limiting rate step for the leaching rate at The third, final stage of leaching.