Drip irrigation

Micro spray is also called spray irrigation. In recent years, on the basis of summarizing sprinkler irrigation and drip irrigation, an advanced irrigation technology has been newly developed and developed at home and abroad.

Micro spray is also called spray irrigation. In recent years, on the basis of summarizing sprinkler irrigation and drip irrigation, an advanced irrigation technology has been newly developed and developed at home and abroad. Micro-sprinkler technology is more water-saving than sprinkler irrigation. Due to the small droplets, its adaptability is greater than that of sprinkler irrigation. The crops are suitable for the whole process from seedling to growth and harvest. It uses a low-pressure water pump and a pipeline system to transport water. Under the action of low-pressure water, the water is sprayed into the air through a specially designed micro-atomizing nozzle, and dispersed into fine droplets, which are sprayed on the branches and leaves of the crop or on the ground under the canopy. This kind of irrigation method is called micro spray for short. Micro-spraying can not only increase soil moisture, but also increase air humidity, and play a role in regulating the microclimate

Micro-irrigation is the abbreviation of micro-water irrigation. It uses micro-irrigation system equipment in accordance with crop water requirements through a low-pressure pipeline system and a special irrigation device (dripper, micro-sprinkler, etc.) installed at the tail (final pipeline). Water and the water and nutrients needed for crop growth are delivered uniformly and accurately directly to the soil surface or soil layer near the roots of the crops at a small flow rate, so that the soil at the roots of the crops is always kept in the best water, fertilizer, and gas state Of irrigation methods. The characteristics of micro-irrigation are small irrigation flow, long duration of one irrigation, short cycle, low working pressure, can more accurately control the irrigation volume, and directly transport water and nutrients to the soil near the crop roots to meet crop growth Developmental needs

According to the different ways of water outflow during irrigation, micro-irrigation can be divided into drip irrigation, micro-sprinkler irrigation and infiltration irrigation. Among them, drip irrigation is the most widely used.
Drip Irrigation Drip irrigation is a method in which the irrigator on the capillary at the end of the micro-irrigation system is a dripper or a drip tape made of dripper and capillary to dissipate the energy of a certain pressure of water and then drip into the roots of the crops in drops for irrigation. In use, the capillary and the irrigator can be placed on the ground, or buried 30-40 cm underground. The former is called surface drip irrigation, and the latter is called underground drip irrigation. The flow rate of the dripper is generally 2-12 liters/hour, and the working pressure is 50-150 kPa.
Micro-sprinkler irrigation Micro-sprinkler irrigation is a micro-sprinkler at the end of the micro-irrigation system. The micro-sprinkler sprays water with a certain pressure (generally 200-300 kPa) on the soil surface near the crop leaves or roots in a fine mist. There are two types, fixed type and rotary type. The former has a small spray range, while the latter has a large spray range with large water droplets and large installation distances. The flow rate is generally 10 to 200 liters/hour.
Outflow from the small tube The outflow from the small tube uses a microtube with a diameter of 4 mm to connect with a capillary tube as an irrigation device to locally moisten the soil near the crop in a trickle (jet) shape. The flow rate is generally 80 to 250 liters/hour. For tall fruit trees, a small seepage trench is usually built around the trunk to disperse the water flow and evenly moisten the soil around the fruit trees.

Infiltration irrigation is a special capillary at the end of the micro-irrigation system, which is buried 30-40 cm below the ground surface. Low-pressure water passes through the capillary pores in the permeable capillary wall to wet the surrounding soil in the form of seepage. Because it reduces evaporation on the soil surface, it is a micro-irrigation technology with the least water consumption. The flow rate of the percolating capillary is 2 to 3 liters/(hour?m).
What is micro sprinkler irrigation?

Micro-sprinkler irrigation, also known as micro-sprinkler irrigation, uses very small sprinklers (micro-sprinklers) to spray water on the soil surface. The working pressure of the micro-sprinkler is similar to that of the dripper, but it dissipates the energy of the water flow in the air. Because the wetted area is larger, the flow rate can be larger, and the spraying orifice can also be larger. The outflow velocity is much larger than that of the dripper, so the possibility of clogging is greatly reduced.

The difference between micro-sprinkler and sprinkler irrigation is:
1. Micro-jet has a range, but the range is relatively short, generally within 5 meters. The sprinkler irrigation has a longer range. Take the national PY series of rocker-arm sprinklers as an example, the range is 9.5-68 meters.
2. The degree of atomization of the micro-spraying water is high, that is, the droplets are small, so the impact on the crops is small, the uniformity is good, and the seedlings will not be harmed. However, sprinkler irrigation is easy to damage young seedlings due to the large water droplets.
3. The working pressure required for micro-spraying is low, generally within the range of 0.7-3 kg/cm², it can work well. The working pressure of sprinkler irrigation is generally above 3 kg/cm² to have a more significant effect.
4. Micro-spraying to save water, the general spraying volume is 200-400 liters/hour. The water spray rate of the PY series nozzles nationwide is 1.35-116.54 cubic meters per hour. This shows that micro-sprinkling is more water-saving and energy-saving than sprinkler irrigation.
5. The micro-sprinkler has simple structure, low cost, convenient installation and reliable use