Advantages of levelling
Answers
Answer:
reduce water required for land preparation
Answer:
Leveling, smoothing and shaping the field surface is as important to the surface system as the design of laterals, manifolds, risers, and outlets are for sprinkler or trickle irrigation systems.
It is a process for ensuring that the depths and discharge variations over the field are relatively uniform and, as a result, that water distributions in the root zone are also uniform.
These field operations are required nearly every cropping season, particularly where substantial cultivation following harvest disrupts the field surface.
The preparation of the field surface for conveyance and distribution of irrigation water is as important to efficient surface irrigation as any other single management practice the farmer employs.
(1) to provide a slope which fits a water supply
(2) to level the field to its best condition with minimal earth movement and then vary the water supply for the field condition.
Because land leveling is expensive and large earth movements may leave significant areas of the field without fertile topsoil, this second philosophy is also generally the most economic approach.