Question 6
(a) Give two reasons why well irrigation is popular in North India.
(b) Mention two disadvantages of tank irrigation.
(c) (i) What is meant by rain water harvesting?
(ii) Mention any two methods of rain water harvesting.
Answers
Answer:
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Explanation:
a.
North India has wide spread deposition of alluvial soil which is suitable for well irrigation. In south india ground water reserve is far below the surface but in nortb india the ground water level is within easy reach. this well irrigation is more important in north India.
b.
Answers and Solutions
Tanks use up large areas of land which could be used for agriculture.
They dry up in summer and are not of much use.
A lot of water evaporates as they are very shallow.
It is difficult to carry water to the fields due to rocky terrain. Post Answer and Earn Credit Points.
c.
i. Definition. Rain water harvesting is a technique of collection and storage of rain water in surface (storage tanks) or sub surface aquifer before it is lost as surface runoff.
ii
Broadly there are two ways of harvesting rainwater, namely; surface runoff harvesting and rooftop rainwater harvesting. Rainwater harvesting is the collection and storage of rain for reuse on-site, rather than allowing it to run off. The stored water is used for various purposes, such as gardening, irrigation, etc.