Six methods of Irrigation in Citrus Orchard

The main results are as follows: (1) Amoy irrigation is also called immersion irrigation. That is, the trench is opened between the rows of the citrus orchard and connected with the water transport channel, and the irrigation water seeps into the soil through the bottom and wall of the ditch. This method is often used at present. (2) diffuse irrigation to build ridges in the orange orchard and divert water from the garden. This method has the advantages of large water consumption, easy hardening of topsoil and poor soil permeability, so it is generally not suitable to be used. (3) the plate irrigation takes the citrus trunk as the center, makes the soil ridge under the dripping edge of the tree crown, forms a disk, uses dynamic water diversion, skin tube irrigation or artificial water carrying for irrigation, and loosens the soil cover after irrigation. This method is generally used for irrigation in orange orchards and young orange orchards that lack water. (4) pour the hole on the tree plate under the dripping edge of the orange orchard crown, dig irrigation holes, each plate dig 8-12 holes, 30 cm wide and 30 cm deep, and put up a handful of straw in the hole and cover the soil after irrigation. This method can be combined with the application of quick-acting liquid fertilizer. (5) Sprinkler irrigation means that in the orange orchard, mechanical equipment such as power pumps, water pipes and sprinklers are used to spray the water from the water tower or reservoir into the air of the citrus orchard to form small water droplets and fall on the canopy and the ground. There are four kinds of sprinkler irrigation methods: high head sprinkler irrigation, low head sprinkler irrigation, fixed sprinkler irrigation and mobile sprinkler irrigation. The water of high-head sprinkler irrigation is not deep into the soil, the waste of water is large, and the surface is easy to harden after spraying. At present, there are many ways of low-head micro sprinkler irrigation in citrus orchards. (6) drip irrigation is an irrigation method in which water droplets or small water flow slowly seep into the root zone through pipes. Drip irrigation saves more than 50% of water than sprinkler irrigation, can evenly supply water to the soil in the citrus root area, and can maintain soil permeability. But drip irrigation is often easy to block pipes and emitters. Therefore, it is necessary to strictly select filtration equipment, at the same time, there should be no mineral deposits in the water, no algae in the pipeline, and so on.