Orange trees like warm and humid environment and need plenty of light, but they should be spent in semi-shady places in summer, and it is best to place them in places where the sun can be seen in the morning but not in the afternoon, such as the east side of atrium or the east side of big trees. The best ground is the ground, not the cement and slate ground, which can sprinkle water on the ground, increase the air humidity and be beneficial to plant growth. Water in spring, summer and autumn should be dry but not wet, and it should be dry and not wet in winter, and it should be kept dry slightly, but when it is necessary to water, it should be watered thoroughly, not half. The suitable wintering temperature in winter is 10- 15℃, which will be damaged to a certain extent at low temperature, while high temperature is not conducive to its dormancy. In summer, it is necessary to prevent direct sunlight, ventilate and humidify as much as possible, and strengthen fertilizer and water management. Fertilization before flowering is mainly based on compound fertilizer of nitrogen, phosphorus and potassium, and after flowering, phosphorus and potassium can be mainly used to avoid excessive use of nitrogen fertilizer, which may easily lead to excessive growth. During flowering, flowers and fruits should be thinned, artificial pollination should be carried out, fruits should be kept reasonably, one or two per branch, more trees should be kept, and young trees should be strictly controlled. Prune branches every year during fruit expansion. Pruning is mainly to remove clumped branches, pests and diseases, cross branches, over-dense branches and so on. , and appropriately cut short the branches that are too prosperous. Promoting the growth of more branches is conducive to bearing more fruits in the coming year. Phosphorus and potassium fertilizer are mainly applied in autumn to lay a good foundation for overwintering. Don't water or fertilize too much when the fruit just bears, so as not to drop the fruit. When the diameter of orange fruit is 2 cm, it is necessary to strengthen fertilizer and water management to make the fruit big, bright and good in color. It is suggested to use organic fertilizer, such as retted sesame paste residue. You can use a fertilizer solution diluted several times each time, or you can bury solid organic fertilizer in a pot or 4-5 cm under the soil, and avoid direct contact with the roots. The growing season should be in a place with good ventilation and suitable lighting, and there are generally no pests and diseases.

Other answers in summer, kumquat should be applied with dilute liquid fertilizer two or three times. Apply thin fertilizer every half month after flowers wither, apply some compound fertilizer and add phosphorus and boron fertilizer after fruit is shaped to promote fruit development and enrichment. It is best to apply liquid fertilizer to kumquat, which can be applied once every seven days from leaving the room in spring to before budding (from mid-April to early June), with the flowering period suspended, and once every 10 day from the beginning of July to the end of September. Using liquid water mixed with sesame sauce residue and horseshoe slices with water to make kumquat sour has the best effect, which can make the plants grow vigorously, and the fruits are large and colorful.

There are two reasons for pruning potted oranges. First, the pot is small, the soil is small, and the nutrients provided are limited, which can not meet the needs of citrus growth and must be pruned. Second, through pruning, the rational distribution of nutrients in the tree can be adjusted, so that limited nutrients can be supplied to buds and leaves to form more fruiting branches, thus achieving full flowering and fruiting branches. The spring shoots of potted oranges must be pruned intensively before they germinate. First of all, we should remove dead branches, diseased branches, clustered branches, inward branches, cross branches and sprouting branches. Weakly cut strong branches, leaving 4 or 5 full buds; Strong pruning of weak branches leaves 2 or 3 buds, so that each branch can grow stronger spring shoots. After the spring shoots are fully grown, in order to control their imaginary length, they can be lightly cut and 3 or 4 branches can be cut off. When the new shoots grow to 6 ~ 8 knots, the heart should be removed to induce more summer shoots.