Drip irrigation is a water-saving and efficient irrigation technology which has developed rapidly in recent years. Drip irrigation is a method of slowly transferring water to crop root zone by dripping. In the past, drip irrigation mostly used microtubular drippers, one end of which was fixed on the branch pipe of the water pipeline and the other end was placed near the root zone of the crop. Because this kind of micro-tube emitter is very thin, it is easy to clog, especially in many areas of northern China, the water quality is relatively hard, containing a large number of calcium and magnesium ions, which is prone to clogging; in addition, the uniformity of the emitter is poor. In recent years, plastic film ribbon hose has been used, which directly perforates the water, the water is more uniform, and easy to install, low cost, 1 – 2 years replacement, very suitable for vineyards.
The main advantages of drip irrigation in vineyards are:
1.Saving Water and Energy
Drip irrigation saves 30%-40% of water than furrow irrigation, thus saving energy consumption such as oil and electricity.
2. Drip irrigation has little effect on land use.
Temperature dropper irrigation water volume is less, and it is not a one-time irrigation in a short time, so the direct impact on ground temperature is small. Moreover, drip irrigation is to irrigate water in the underground root area, the amount of surface evaporation water is small, which reduces the heat consumption of soil evaporation. Therefore, the ground temperature of drip irrigation vineyards is generally higher than that of traditional surface irrigation, so grapes grow faster and mature earlier. This is more significant in protected cultivation.
3. Significant reduction of damage to soil structure
Drip irrigation is to supply water to the soil by drip infiltration, which will not cause damage to the soil structure.
4. Reducing Air Humidity
The relative humidity of air around the vineyard canopy decreases by about 10% compared with surface irrigation, which greatly reduces the occurrence and spread of diseases and pests.
5. Reduction of some diseases transmitted by irrigation water
Especially the chances of transmission and reinfection of root cancers.
6. Drip irrigation combined with topdressing fertilizer and pesticide application improves labor productivity
Applying facility fertilizer device to drip irrigation system, fertilizer is sent to the root zone along with irrigation water, which not only saves fertilizer, but also improves fertilizer efficiency and saves fertilizer applicators. Some pesticides used for soil disinfection and root application can also be applied to soil through drip irrigation, thus saving labor costs and improving the effect of medication.
7. Irrigation saves labour and labour
Drip irrigation is a semi-automatic mechanical irrigation method. When installed drip irrigation equipment is used, it can be self-irrigation as long as the valve is opened and the appropriate pressure is adjusted.