Water the soil surface under a certain pressure in the form of fine droplets, spray nozzle in the form of rain is called titles the sprinkler irrigation system tubing.

Uneven surface, the slope more, infiltration (irrigation rate) of high lands surface irrigation (irrigation keel) method is not efficient implementation.

a- water supply : This method can be used every kind of water source. In other words, any river, lake, deep wells, ponds, dams, irrigation channels etc may be. Be appropriate in terms of quality irrigation water and sediment, and swimmer's matter should not contain large amounts of substances that otherwise would be caused by blockage in the pipe lines and headers.

1- The soils usable water holding capacity;

Plants in soil water between field capacity and permanent wilting poin benefit. This is the amount of  moisture holding capacity of soil avaliable water capacity is called, or favorable. (vide table 1.)