الزراعة الأحادية و الثنائية للمحاصيل المتحملة للملوحة في الترب المتأثرة بالأملاح

الملخص EN

Reclamation of salt affected soils requires excessive quantities of leaching water which are difficult to provide in the current water scarce.

That led to urgent necessity for in situ technique such as phytoremediation.

The experiment was conducted at the college of Agriculture field, Abu-Graib district west of Baghdad during the period (July-November 2009).

The soil classified as TypicTorrifluvent.A random complete block design, experiment was used.

Each treatment with plot area 3×4 m was replicated three times.

The treatments were : S1- Monoculture- planting one salt tolerant crop-sorghum, S2- Monoculture- planting one salt tolerant crop-millet, S3- Diculture – planting two salt tolerant crops : sorghum and millet.Soil samples were collected from each plot from four depths (0-25),(25-50),(50-75),(75-100) cm, before planting and at the harvest stag.

Soil properties were estimated before and after phytoremediation.

The results showed reduction in EC after cropping in all treatments and depths.

The EC values for: S1, S2, S3 treatments reduced from 9, 9, 8.5 ds.m⁻¹ before cropping to 5.5, 4.8, 4.8 ds.m⁻¹ at first harvest and 2.8, 3.4, 3.0 ds.m⁻¹at the second harvest, respectively.

Significant increase in salt removal by salt tolerant crops caused by S3 which removed 506 kg ha⁻¹ with an increase 19.3 and 140.9 % compared to with S1 and S2, respectively.

The results indicate the efficiency of diculture and increasing the biomass in salt removal from soil.