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Citrus trees after freezing care measures (2)
2. Strengthen soil, fertilizer and water management. The citrus garden subject to freezing damage generally requires the soil to be reduced tillage, and fertilization should be avoided. The best is to spray thin leaf fertilizer. From April to July, the urea solution is mainly used twice a month. From August onwards, phosphorus and potassium fertilizers are added to the spray. General freeze-damaged trees are prone to micronutrient deficiencies such as zinc, manganese, and copper, and can be identified based on the newly-infested branches and leaves, and then the trace elements absent from the tree body, such as foliar fertilizers, or leaves such as leaves Such as multi-micro composite fertilizer. The year of rainy snow, especially after the spring, when there is more rain, it is necessary to open the ditch in time to remove the accumulated water so as to prevent rot. After a fine day, loose soil in time to prevent soil compaction and increase soil temperature. In the hot summer and dry seasons, we must pay attention to drought prevention and drought resistance, and we can use local materials to cover the trees in order to prevent droughts and cool down and prevent soil erosion. 3. Branch crack prevention and timely prevention and pest control. Frozen orange trees are damaged due to foliage damage and exposed branches. They are prone to sunburn during the hot season, causing tree barks to burst, causing resinous diseases, anthrax, and further weakening the tree vigor. Therefore, it is very important to protect the branches and use 5 parts of lime. Sulfur cocktail solution 1 part, salt 0.1 parts, 0.1 parts of tung oil add water 20 parts, prepared into a whitening agent, painted branches. The young shoots of young shoots that are thawed by frozen trees are both valuable and vulnerable to pests and diseases. Therefore, they should be serious for locusts, crickets, mites, leaf miners, wind butterfly larvae, anthracnose, etc. Check, timely prevention and treatment.