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The success of canal irrigation in an arid region depends most on which complementary arrangement?

Answer and explanation

Correct answer: उचित निकास व्यवस्था

Canal irrigation in an arid region must be accompanied by effective drainage. Although irrigation supplies essential water, excessive application or leakage from canals can raise the local water table. Because evaporation is high in dry climates, groundwater may move upward and leave salts in the root zone. The combined effects are waterlogging and secondary salinization, both of which reduce soil productivity and can eventually make farmland unusable. Thus option A is the necessary complementary arrangement. Option B is not automatically beneficial because more water without drainage can intensify the problem. Removing vegetation and increasing groundwater extraction are not dependable substitutes for planned field drainage and water management.

Related tags

Canal IrrigationArid RegionsDrainageWaterloggingSoil SalinityIrrigationWater ResourcesGeography

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