Mushroom topdressing methods and commonly used micro-sprinkler and artificial fog systems for flower irrigation

Micro-sprinkler irrigation is one of the common water-saving irrigation methods; micro-sprinkler emitters irrigate crops by spraying water in a water-flow pattern. In micro-sprinkler systems, various micro-sprinklers and spray tapes are commonly used emitters. Micro-sprinkler systems used for open-field flower cultivation generally lay spray tapes on the ground surface or insert micro-sprinklers into the ground; in protected horticulture, micro-sprinklers are usually hung upside down on the facility framework to avoid affecting the micro-sprinkler system's irrigation of other crops.

Rotary micro-sprinklers and scattering micro-sprinklers are the two most common types of sprinklers in micro-sprinkler irrigation systems. Generally, rotary micro-sprinklers are used for supplemental irrigation; scattering micro-sprinklers are further divided into refractive micro-sprinklers and centrifugal micro-sprinklers. Refractive micro-sprinklers have both irrigation and humidifying/cooling effects, while centrifugal micro-sprinklers are often used for atomizing irrigation in soilless cultivation and also have humidifying and cooling effects.

To create a field microclimate, drip irrigation and micro-sprinkler irrigation need to be combined, with drip irrigation as the main method, while the micro-sprinkler system is mainly used for supplemental irrigation and humidifying/cooling.

When using a micro-sprinkler system, the following points should be noted:

1. When micro-sprinklers are installed upside down, anti-drip devices must be installed to prevent water from dripping from the micro-sprinklers after the water supply stops and harming the flowers;

2. If the micro-sprinkler system and the drip irrigation system share one water source in a facility, a pressure-reducing device must be installed on the drip irrigation system or a local pressurizing device must be installed on the micro-sprinkler system, to prevent the drip irrigation system from bursting or the micro-sprinkler system from failing to spray;

3. The micro-sprinkler device must be cleaned regularly; cleaning after each irrigation is recommended, and it is prohibited to remove the filter element and leave it out of use.