Four-year planting management technology of citrus

First, the planting period and method are generally planted in spring and autumn, and the effect of autumn planting is better.
Planting in autumn is generally from late August to early September and spring planting is from February to March. Plant spacing 2*3 or 3*4 meters. The width of each planting hole is 1 meter, mixed soil 2-3 tons of mixed fertilizer, 25 to 50 kilograms of mature pig manure or 2-5 kilograms of oil cake, 2 kilograms of superphosphate, 1 month after planting seedlings. When planting, the rootstock should be 5-10cm above the ground, drench the rooted water, and then water at any time to ensure survival. After 1 month of seedling survival, Fang Keqin applied thin manure to remove manure and added a small amount of urea.
Second, the soil, fertilizer, and water management shall be cultivated and weeded in due course.
Saplings are applied 1-2 times a month to remove manure water and appropriate amount of urea.
The result tree was fertilized 3-4 times a year, and was fertilized once before the germination at the end of February or early March. It was dominated by pig manure water and quick-acting fertilizer (urea or compound fertilizer); it was once fertilized in the middle and late July and mainly composed of compound fertilizer; 10 The base fertilizer is applied once in the middle or late of the month or in late 12th, and the organic fertilizer is mainly used with the appropriate quantitative fertilizer.
Saplings applied 0.3-0.5 kg of urea per plant, 0.5 kg of phosphorus and potassium fertilizers, and 30-50 kg of livestock and manure;
Young planting trees each applied 0.8-1 kg of urea, 1.2-1.5 kg of phosphorus and potassium fertilizers, and 50 kg of livestock and manure.
In adult fruit trees, organic fertilizers are mainly used to increase potash fertilizer. Each year, a total of 2-3 kilograms of oil cake, 2-3 kilograms of phosphorus and potassium fertilizer, 20 kilograms of green manure, and 70-100 kilograms of human and animal manure are applied per plant. Base fertilizer accounts for 50% of annual fertilization, 20% of spring fertilization, and 30% of summer fertilization. If appropriate, add root fertilizer (foliar spray).
In the spring, summer and autumn, attention should be paid to preventing drought and timely irrigation.
Third, pruning pruning through timely training, training trunk and main branches, the formation of natural round head or natural happy-shaped, tower-shaped village cap. Timely cut off pests and trees, weak branches and useless branches.
Fourth, Baohuabao orange, non-nuclear brocade orange, etc. in the week after Xiehua and the second physiological fruit drop before the preservation of fruit. Non-nuclear blood oranges mature from the end of January to the beginning of February of the following year, and winter temperatures are too low to cause pre-harvest fruit drop. Therefore, fruits should be preserved from late November to early December.
V. Pest Control The common pests and diseases include anthrax, spider mites, yellow spiders, arrowheads, aphids, hornbills, leafhoppers, and swallowtails. The commonly used agents include dexamethasone, thiophanate-methyl, carbendazim, omethoate, konjac, nisolol, fluorenone, isocarbophos, oil emulsion, dichlormic acid, lime sulfur, etc. See pesticide instructions for details.

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