The drip irrigation system must have sufficient water sources as a guarantee. The water sources that can be used as drip irrigation include river water, lake water, reservoir water, pond water, spring water, well water or channel water.
If the water source is relatively clear river water and reservoir water, and can meet drip irrigation water extraction all the year round, there is generally no need to build a reservoir. If the water source is well water, spring water, or river water with seasonally changing flow, it is generally recommended to add a reservoir to play the role of water storage and precipitation. The size of the reservoir depends on the size of the plot and the amount of citrus planting (water consumption).
The irrigator is the most critical component in the irrigation system. The irrigator in the drip irrigation system mainly includes a dripper, drip tape and so on.
Lead out special PE pipes (drip irrigation pipes) for drip irrigation from the branch pipes, one drip irrigation pipe per citrus line, punch a hole in the drip irrigation pipe next to each citrus, and insert a dripper (preferably a dripper with pressure compensation). A special water separator for drip irrigation is installed on the head, and the water separator is connected with a special diversion tube for drip irrigation to guide the drip irrigation water to four points around the citrus.
After the citrus is slightly larger, you can add 1-2 drippers to the drip irrigation pipe next to each citrus to ensure that each citrus has enough water.
The drip irrigation belt is best to choose an inner-type drip irrigation belt with pressure compensation to ensure uniform water output. When the citrus is still in the seedling stage, it is generally recommended to lay a single belt. When the citrus is slightly closed, add a drip irrigation belt to each row of citrus.
Compared with the use of drippers, the use of drip irrigation has a disadvantage, that is, in the seedling stage of citrus before the closure, drip irrigation with water and fertilizer is prone to waste (where the citrus tree is not covered) and breed weeds.
Our solution to this problem is: insert a small stick between the two citrus trees, with the stick about 20-30cm out of the ground, put the drip tape on the stick, fix it with a rope or tie, and open the drip irrigation system. The drip irrigation belt at the higher place where the stick is set up, the water droplets from the drip hole will flow along the drip irrigation belt to the lower place, and the drip irrigation belt in contact with the ground will flow into the soil, that is, next to the citrus tree. Remove the stick, and place the drip tape flat on the ground.
The installation of drip irrigation systems in citrus orchards is not the same. The actual conditions of different plots and different farmers are different. Farmers should choose and install drip irrigation systems reasonably according to their own conditions.