How to judge citrus dry water shortage
Judging drought from the appearance of canopy and soil. The method is as follows: 1 Observing the leaves: The leaf noodles are curled up in the morning and flatten out sooner or later and begin to yellow, and later even a few deciduous phenomena appear. 2 Look at the base of the tree: The soil on the tree tray is very dry and cracks begin to appear. 3 Check the situation of holding the soil into a group: the soil under the drip edge of the tree plate is used to plow the soil, and the soil cannot be formed by holding the soil. 4 Detection of fruit diameter: Using a micrometer to determine the fruit diameter, and observe the changes in fruit luster and color, it is generally known that the fruit has stopped growing.
The five drought resistance methods have their own characteristics
Amoy irrigation this irrigation method, also known as dipping. That is to say, the ditch is opened between the rows of the citrus orchards, and is connected with the water conveyance channel. The irrigation water seeps into the soil through the bottom of the ditch and the ditch wall.
Pan irrigation This is based on the trunk of citrus trees. It is used to make soil under the drip edge of the canopy, and it is surrounded by circular discs. It is powered by dynamic water diversion, watered by artificial skin or artificial water, and covered by loose soil after irrigation. This method is generally used for irrigating in orange orchard and young oranges that lack water.
Hole irrigation in the orange tree canopy drip edge of the tree plate, excavation irrigation points, each tree disc digging 8 to 12, 30 cm wide, 30 cm deep, and a straw in the hole, after irrigation, covering the soil. This method can be combined with top-dressing quick-effect liquid fertilizer.
Sprinkler irrigation is the use of mechanical equipment, such as power pumps, water pipes, and sprinklers in the Orangery, to spray the water from the water tower or reservoir into the citrus orchard to form small droplets of water that fall on the canopy and the ground. Sprinkler irrigation methods include high head sprinkler irrigation, head irrigation, fixed sprinkler irrigation and mobile sprinkler irrigation. The high head irrigation water is not deep into the soil, waste water is large, and the ground surface is easily hardened after spraying. At present, there are many ways to apply low-dose and micro-spray irrigation to citrus orchards.
Drip Irrigation Drip irrigation is an irrigation method in which water droplets or small water flows slowly through the pipes into the root zone. Drip irrigation can save more than 50% of water by sprinkler irrigation and can evenly supply water to citrus root zone soil and maintain soil permeability. However, drip irrigation often causes plugging of pipes and drips. Therefore, it is necessary to strictly select filtration equipment, and at the same time, there should be no mineral sediments in the water, and there is no algae in the pipeline.
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