Drip irrigation is a form of irrigation that drips water drop by drop, evenly and slowly, into the soil near the plant roots. The drip flow is small, and the water drops slowly into the soil, which can minimize evaporation loss. If mulch is added, it can be further reduced. Evaporation, under drip irrigation conditions, except that the soil moisture immediately below the dripper is in a saturated state, the soil moisture in other parts is in an unsaturated state, and the soil moisture mainly infiltrates and diffuses by means of capillary tension.

However, if the drip irrigation time is too long, soaking may occur under the root system. Therefore, at present, drip irrigation is completed by high-tech computer control, and some are manually operated. Drip irrigation has low water pressure and saves water. It can be used to irrigate each plant separately in areas where different plants grow. However, pressure compensation is required for sloping land. Computers can be used to control by adjusting valves in different areas. The key is to control and adjust pressure and Removes particulate matter from water to prevent clogging drip holes. Generally, plastic pipes are used for water transportation, which should be black or covered with plastic film to prevent the growth of algae and prevent the pipes from aging due to ultraviolet radiation. Drip irrigation can also be done with porous ceramic pipes buried in the ground, but at a higher cost and is only sometimes used on turf and golf courses.