Answer:

Various types of irrigation techniques differ in how the water is distributed within the field. The various irrigation techniques are as under:

♤ Surface Irrigation: Water moves over and across the land by simple gravity flow. Surface irrigation can be subdivided into furrow, border, strip or basin irrigation. It is often called flood irrigation when the irrigation results in flooding or near flooding of the cultivated land.

♤ Micro irrigation: It is application of water at low volume and frequent interval under low pressure to plant root zone. Its types are drip irrigation, sprinkler irrigation etc.

♤ Sub-irrigation: it is also called seepage irrigation. It is used in field crops in areas with high water tables. It is a method of artificially raising the water table to allow the soil to be moistened from below the plants' root zone.