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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 why traditional means of irrigation are still important in most parts of India.
Name a state where Tube wells are common.
Give one reason for each of the following:
Tank irrigation is an important method of irrigation in Karnataka.
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.
Most of the South Indian states are not suitable for development of canal irrigation.
What are the reasons that necessitate artificial irrigation?
Or
What is the importance of irrigation?
With reference to well irrigation, answer the following question :
Name two states in which well irrigation is widely used.
With reference to well irrigation, answer the following question :
Name two types of well used for irrigation in these states.
Canal irrigation leads to the ground around it becoming unproductive.
