1, reasonable pruning
There are two reasons for pruning potted kumquat. One is that the pot is small, the soil is small, and the nutrients provided are limited, which can not meet the needs of kumquat 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. Potted kumquat must be pruned intensively before the spring shoots 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, it is necessary to remove the heart to induce more summer shoots.
2, flower protection and fruit protection
After kumquat blooms, in addition to applying thin fertilizer once a week, flowers and fruits should be thinned. Sparse some buds before bloom; After the flowers wither and set fruit, some young fruits in inappropriate positions should be thinned out to reduce the consumption of nutrients, so that the limited nutrients can be concentrated on the preserved flowers and fruits, and the fruits can grow bigger and better. In the process of fruit growth, if the fertilizer and water are sufficient and the plants are nutritious, some branches will sprout new buds, and the growth of new buds will inevitably divert some nutrients, which will affect the growth of fruits. In order to protect the fruit, the new buds should be smoothed in time. When the fruit turns yellow, stop fertilizing, reduce watering and keep the soil moist and slightly dry. If we continue to give too much fertilizer and water, the fruit will ripen and fall early, shortening the viewing time.
3. Rational fertilization
Kumquat likes fertilizer, so we should apply more thin fertilizer at ordinary times. Apply decomposed liquid fertilizer once before the plants germinate, and then apply liquid fertilizer mainly containing nitrogen every 7 ~ 10 days to promote more branches and leaves and more spring shoots. Fertilize in time after each coring to promote the early maturity of branches. During the growth of kumquat, you can sprinkle some cake fertilizer on the basin surface, so that some fertilizer will penetrate into the soil every time you water it to increase fertility. After autumn, fertilization will be reduced, plant nutrition will be avoided, autumn shoots will be promoted, and fruits will compete for nutrients, leading to fruit drop.
Step 4 turn the washbasin over
Potted kumquat has very limited nutrient supply due to the lack of pot soil. After years of lack of soil fertility, kumquat will weaken year by year, with fewer flowers and fewer fruits. In order to keep kumquat blooming and bearing fruit every year, it is necessary to turn over the pots. The best turning time is half a month before kumquat germination. Before turning over the pot, prepare a pot one size larger than the original one, and take the kumquat out of the pot without breaking the mud. Cut off the topsoil with a thickness of 1 and 2 cm along the mud lump, cut off the dead roots and rotten roots, cut off the soil with a thickness of 1cm at the bottom of the mud lump, and take out the tiles embedded in the original pot bottom pad. The drainage holes of the new pool are laid with tiles. First, lay a drainage layer with a thickness of 2 or 3 cm, and then lay a layer of nutrient-rich culture soil with a thickness of 4 or 5 cm, which is mixed with a small amount of calcium superphosphate. Then put kumquat mud into the pot, fill the culture soil around the mouth of the pot, slightly compact the pot soil, pour enough water, put it in a ventilated and semi-shady place, and put it back to its original place for daily management after one week.