Under certain pressure, drip irrigation is a method where water is slowly and evenly dripped into the soil near the plants' roots through the irrigation network and water outlet pipes (drip belts) or drip heads in the form of drops. Currently, in most parts of China, it is being promoted and applied as one of the most water-saving drip irrigation system for farmland.
Compared with other watering techniques, there are many differences in the composition and watering methods of the drip irrigation system. In the process of operation, some application errors are also common.
The dripping speed of drip irrigation is low, and users often cannot see the process of watering. If the irrigation time is too long, deep leakage will occur; if the irrigation time is too short, the root system will be stressed again.
Getting a clear comprehension of various types of agricultural irrigation systems like surface irrigation, subsurface irrigation, and drip irrigation can help to ascertain the adequate watering intensity, plant water demand, and soil moisture retention for optimal irrigation results. One should continuously adjust irrigation cycles and amounts to match different plant growth stages, climate, and soil conditions, ensuring an efficient and effective irrigation system. It's worth noting that the same irrigation system may not be suitable for every scenario, hence the need for a customized solution.
The drip heads are generally divided into two types: pressure compensation type and non-pressure compensation type. Although the pressure compensation type is more expensive, it performs better. The pressure-compensated drip head can ensure that every drop of water flows out evenly, making fertilization and irrigation uniform. Second, the local pressure-compensated drip head can remove debris that blocks the drip head, and some pressure-compensated drip heads can also reduce the possibility of clogging the drip head.
In fact, well water often contains coarse sand, fine sand, and certain chemicals, which will block the drip head. Commonly used filters include mesh screens, stacked sheets, and media filters. If there are sand particles in the water, a centrifugal filter should be used. Before installing a filter tank, a comprehensive analysis of the water quality should be conducted to assess its physical and chemical components. Based on these findings and anti-clogging performance requirements, one can choose from an assortment of filters suitable for the specific drip irrigation system, including some of the popular types of irrigation filters like media filters.
The combination of irrigation and fertilization is a greater advantage of drip irrigation. The growth of crop roots has the characteristics of being attracted to water and nutrients. With the increase of irrigation water, the fertilizer efficiency is higher. However, thedrip irrigation system for fertilization must have the function of preventing fertilizer backflow to prevent chemical fertilizers from polluting groundwater and other water sources.