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प्रश्न
Mention two factors that favour the development of tube well irrigation in Punjab.
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
Name three traditional means of irrigation.
Give a reason for the significance of irrigation in Punjab
Give a reason for the significance of irrigation in Rajasthan
Give one geographical reason for each of the following:
A tube well should be installed in a fertile and productive region.
Give one geographical reason for each of the following statements:
Irrigation is necessary despite the monsoon.
Name two states in which tube wells are extensively used. Give a reason to explain its importance as a source of irrigation.
What are the favourable conditions in India for the development of irrigation?
The drip method of irrigation is the best among all modem methods of irrigation.
Name the State which leads in irrigation by wells in India.
State two reasons why there is a need for irrigation in India.
