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प्रश्न
Mention two factors that favour the development of tube well irrigation in Punjab.
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उत्तर
A tube well is a deeper well (generally over 15 metres deep) from which water is lifted with the help of a pumping set operated by an electric motor or a diesel engine. Obviously, a tube well cannot be constructed everywhere and requires some geographical conditions favouring its installation. The main factors are:
(i) There should be sufficient quantity of ground water because a tube well can generally irrigate 2 hectares per day against 0.2 hectares per day irrigated by an ordinary well.
(ii) The water level should be nearly 15 metres. If the water table is more than 50 metres deep the cost of pumping out water from the tube well becomes uneconomic.
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संबंधित प्रश्न
Give a reason for the significance of irrigation in Rajasthan
Give one geographical reason for the following:
A tube well should be installed in a fertile and productive region.
Name two modern methods of irrigation. State one important reason for their growing popularity.
Mention two advantages that surface wells have over inundation canals.
Name two states in which tube wells are extensively used. Give a reason to explain its importance as a source of irrigation.
Briefly explain two reasons for perennial canals being a popular form if irrigation in the named states
Name two states in which tube wells are extensively used. Give a reason to explain its importance as a source of irrigation.
With reference to well irrigation, answer the following question:
Give two advantages and two disadvantages of wells.
Name the types of irrigation prevailing in India.
State two reasons why there is a need for irrigation in India.
