Oranges are fruits of orange trees belonging to Rutaceae and Citrus, also known as Guo Huang, Citrus, Jinhuan and Liu Ding. Orange is a kind of citrus fruit, a hybrid of grapefruit and orange, which is native to Southeast Asia. Fruit can be peeled and eaten fresh, and pulp can also be used as an additive for other foods. Another important use of fruit is juicing. \x0d\\x0d\ cultivation techniques \x0d\ soil management \x0d\ It is necessary to do a good job of digging holes and consolidating soil, and it is forbidden to plant tall plants such as corn and wheat in the garden, and the orchard should do a good job of reasonable intercropping and weeding. \x0d\\x0d\ fertilizer and water management \x0d\( 1) Fertilization principle: fully meet the needs of citrus for various nutrient elements, and advocate applying more organic fertilizers, inorganic fertilizers and formula fertilizers. According to the results of leaf analysis, orchard soil analysis and blood orange phenology, fertilization is guided. \x0d\(2) Fertilization methods: mainly soil fertilization and foliar fertilization. The methods of annular furrow application, strip furrow application, hole application and soil surface fertilization were adopted. \x0d\(3) Fertilization of young trees: apply fertilizer thinly, mainly nitrogen fertilizer, with phosphorus and potassium fertilizer, and apply fertilizer 5-6 times in spring, summer and autumn during the germination period (March, May, June, July, September and 65438+February, and apply 0.4 kg of ammonium carbonate or 0.2 kg of urea to each plant each time. 1-3 young trees should be applied with pure nitrogen 100-400g every year, and the ratio of nitrogen, phosphorus and potassium is1.0: (0.4-0.5):1.0. Adult trees should be fertilized four times, that is, germination accelerating fertilizer, fruit protection fertilizer, fruit strengthening fertilizer and fruit picking fertilizer. Generally, the amount of fertilizer applied is 2-3 kg of chemical fertilizer and one load of manure. Fruit-keeping fertilizer 1-2 kg phosphorus and potassium fertilizer+1 kg chemical fertilizer; Strong fruit fertilizer 1-2 kg chemical fertilizer+1-2 kg phosphorus and potassium fertilizer; The fruit picking fertilizer (base fertilizer) is mainly organic fertilizer, and each plant is applied with 50- 100 kg organic fertilizer+1-2 kg chemical fertilizer. \x0d\(4) Water content: Irrigation when soil is dry, drainage when water accumulates. Plastic trimming 1, principle. Adjust measures to local conditions, prune trees, properly raise and lower them, and ventilate and transmit light to achieve three-dimensional effect. \x0d\\x0d\2。 Plastic surgery (naturally happy shape). The trunk is 20-40cm high, and the trunk branches (3-4 branches) are scattered on the trunk. The branching angle of the main branch is 30-50 degrees, and 2-3 auxiliary main branches are left on each main branch. Generally, after the third main branch is formed, the central trunk of this kind is cut off and twisted to one side to form a fruiting branch group. \x0d\\x0d\3。 Trim. \x0d\( 1) young trees: mainly light pruning. After selecting the extension branches of the class center and the main branches and the extension branches of the auxiliary main branches, moderate or even severe pruning is carried out, and the growth balance among the main branches is adjusted according to the pruning degree and the direction of cutting buds. In addition to properly thinning the over-dense branches, the inner branches and weaker branches in the middle and lower part of the crown should generally be retained. \x0d\(2) First fruiting stage: Continue to select short cutting to deal with trunk extension branches at all levels, erase summer shoots, and promote strong autumn shoots. In autumn, measures such as ring cutting, root cutting and water control are taken to promote the flowering of Wangshu. \x0d\(3) Full-fruiting period: timely retract the fruiting branches, falling fruiting branches and falling branches, and cut off the light-blocking branches, dead branches and insect branches.