The citrus adult tree has entered a comprehensive result period, and the vegetative growth and reproductive growth have reached a relative balance. The longer this relative balance is maintained, the longer the fruiting period will be. For example, to adjust the relationship between vegetative growth and reproductive growth, fertilization is often carried out as follows:
1. Rectangular ditch: The Qishuguan drip line opens a rectangular ditch. The ditch is 1~1.5 meters long, 0.5 meters deep, 0.6 wide, and flat. The fertilizer has a large contact surface and is easily absorbed by the root system.
2. Acupoint application: The absorption roots of mature trees are mostly concentrated within the canopy drip line. In order to avoid excessive root injury, acupoint fertilization method is adopted, that is, 4~6 holes are opened around the canopy drip line, and the diameter is about 0.6 meters. The depth is 0.5 meters, and the hole position is staggered every year to facilitate root growth.
3. Application: In the rainy season, the soil nutrients are leached more, and the application method can be applied when supplementing nitrogen and potassium fertilizers. Spread the fertilizer evenly, contact the root system, spread the fertilizer under the canopy, and then use the hoe to turn into the soil. If the soil moisture is low, it can be combined with irrigation.
4. Â Â Â Â Â Â Top dressing: The top dressing can reduce the loss of fertilizer to supplement the fertilizer and improve the fertilizer efficiency.
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