define me about drainage.....
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Answer:
The removal of excess water either from the ground surface or from the rootzone, is called drainage.
Excess water may be caused by rainfall or by using too much irrigation water, but may also have other origins such as canal seepage or floods.
In very dry areas there is often accumulation of salts in the soil. Most crops do not grow well on salty soil. Salts can be washed out by percolating irrigation water through the rootzone of the crops. To achieve sufficient percolation, farmers will apply more water to the field than the crops need. But the salty percolation water will cause the water table to rise. Drainage to control the water table, therefore, also serves to control the salinity of the soil
Explanation:
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Answer:
Drainage is the system or process by which water or other liquids are drained from a place. Line the pots with pebbles to ensure good drainage. The drainage system has collapsed because of too much rain. Synonyms: sewerage, waste, sewage More Synonyms of drainage.