Because Qingdao is located in the north temperate monsoon region, it belongs to the temperate monsoon climate and has a little maritime climate characteristics. Due to the direct regulation of the marine environment and the influence of southeast monsoon, ocean current and water mass from the ocean surface, the urban area has obvious maritime climate characteristics. The air is humid, the temperature is moderate, and the four seasons are distinct. 1 Monthly average temperature -3 degrees, extreme low temperature-16 degrees. So it is suitable for planting kumquat.
Kumquat likes sunshine and warm and humid environment, which is not cold-resistant, slightly shade-resistant and drought-resistant. It requires fertile and loose slightly acidic sandy loam with good drainage. Kumquat is a plant that likes light. It is placed in a sunny place during the growing period and is hot and exposed in summer.
Cultivation methods and matters needing attention of kumquat;
1, fertilizer and water management
Generally, fertilizer should be applied every 7 ~ 10 day, and the concentration should not exceed three tenths. When the bud blooms, we should pay attention to applying sufficient phosphate fertilizer to facilitate fruit setting.
Proper watering should be controlled during flower bud differentiation, only when the upper tender leaves are slightly wilted, so as to control the excessive vegetative growth of plants and promote flower bud differentiation. After the flower bud differentiation is completed, the watering amount should be gradually restored. It is not advisable to water during flowering and fruit setting, and then water normally after the fruit is stable, but no water can be accumulated in the basin to avoid fruit dropping.
2. Branch management
Because the root system of potted kumquat is inhibited, although there is no shortage of nutrients in the pot, the supply of nutrients to the plant by the root system is still limited, and fruit drop is inevitable. It is better to take the initiative to thin flowers and fruits and save nutrition. How much fruit to leave depends on the specific situation. Generally in the same axil, sometimes 2-8 flower buds are produced, and one can be left; Leave 2 ~ 8 buds per branch, 1 ~ 2 fruits.
Picking and pruning the tender branches of kumquat many times a year can form flower buds, which can be used as a heart when the spring shoots grow to 5-6 leaves, and promote the differentiation of flower buds, blossom more and bear more fruits. Prune the spring shoots once before they germinate, so that the sprouted branches are strong and in good shape.
3. Cultivation and management of kumquat trees
Reasonable pruning: after spring, the temperature rises and kumquat grows rapidly, so pruning is necessary. That is, according to the need to leave branches on the upper part of the round-headed trunk, 3- 5 main branches are selected to stay on the trunk, the trunks of other parallel branches are aligned, and the base is cut off. Then, according to the environment of strong backbone, strong branches can cut 4-5 buds; Weak branches can cut 2-3 buds. This can mediate the growth of branches, promote the growth of main branches, and lay the foundation for flowering. After two months of growth, the new buds are generally in full bloom. In order to control its overgrowth, a second pruning is necessary. However, the amount of pruning can be reduced, mainly by cutting tips. In the future, each new shoot will have 8- 10 leaves, so it is necessary to pick the heart once in order to induce a large number of summer shoots in order to bear more flowers and fruits. The last coring time should be determined according to the fact that all summer shoots can form buds. ?