Grapefruit is a tree species widely distributed in southern China. Although there are very few grapefruit trees in the north, grapefruit is a kind of fruit that we often eat. Now, grapefruit trees can also be cultivated in pots. The following is a brief introduction to the cultivation of grapefruit trees.
Introduction of grapefruit tree
Introduction: The grapefruit tree is also known as "Wen Dan", "æ ¾" and "Throw". Rutaceae. Evergreen trees. The leaves are large and thick; the leaves are large and heart-shaped. Large flowers, often clustered to form racemes. Fruit large, round, oblate or broadly obovate; yellowish or orange when mature. The peel is thick, has a large oil gland, and is not easily peeled off. The flesh is white or red. Fruity sweet and sour taste, mature at the end of autumn, resistant to storage. Seed single embryo. Grafting, layering, etc. It is cultivated in Guangxi, Fujian, Zhejiang, Guangdong, Sichuan, Chongqing and Hunan. There are varieties such as "Wendan Pomelo" and "Shatian Pomelo". The fruit is for raw food or processing, and the peel can be used to make candied fruit. Aromatic oil can be extracted from flowers, leaves and peels.
Features: Arbor. The shoots, leaf backs, peduncles, calyx and ovary are pilose, the young leaves are usually dark purple, and the twigs are flat and ribbed. The leaves are thick, dark green, broadly ovate or elliptical, with lobes 9-16 cm long, 4-8 cm wide, or larger, blunt or round at the tip, sometimes shortly pointed, base round, long wing 2-4 cm, 0.5-3 cm wide, the wings of individual varieties are very narrow. Racemes, sometimes with axillary flowers; flower buds pale purple, thin milky white; calyx irregular 5-3 lobed; petals 1.5-2 cm long; stamens 25-35, sometimes part stamens sterile; style long The stigma is slightly larger than the ovary.
Cultivation of grapefruit trees
1. Matrix: A mixed matrix composed of rot, coarse sand and garden soil can be used. Their proportions are 1:1.5:1.5 by volume, preferably a small amount of bone powder is added at the same time, and the amount can be controlled in cultivation. The total volume of the matrix is ​​about 0.3%.
2. Colonization: Large pots can be used as containers. In the operation, first fill a small number of pots, then add 50-70 grams of horseshoe pieces as the base fertilizer. Put the two-year-old seedlings into the basin and correct it. After filling the soil, press it slightly, and leave it along, and pour the water once. Note that it is not advisable to topdress in 4-6 weeks. In order to facilitate the slow seedling, the colonization operation is best carried out on a cloudy day.
3. Ensuring light: The grapefruit tree will grow well only in a well-lit environment. Of course, even in brightly lit rooms, grapefruit trees can bloom, but it is almost difficult to store fruit.
4. Watering: Almost most plants do not like water accumulation, and the rootstock of the grapefruit tree has strong adaptability, so the watering should be based on the principle of lack of erosion.
5. Fertilization: It is necessary to give fertilizer to the principle of thin fertilizer and more application.
6. Improve the fruit-hanging rate: potted grapefruit is easy to feed, and flowering is easy. The most difficult thing is to hang fruit. It is good to hang a grapefruit in a pot. The fruit can be carried out from two aspects: 1. Increase the nutrition of the tree and strengthen the fertilizer. Management, try to keep the leaves as much as possible to prevent abnormal leaves; 2. Control the amount of flowers, and remove those flowers that are more deformed and more dense.
7. Artificially assisted pollination: Although the grapefruit is hermaphroditic, if it can be properly assisted by pollination, it will increase the rate of fruiting.
8. Reproduction: Plants are mainly propagated by grafting, and are mostly carried out from March to June every year. Budging is usually used. Using sour acid sleeves as rootstocks, rootstocks are usually sown from September to October. After grafting, the soil should remain moist. After the new leaves are grown, the top dressing begins. Be careful to remove the sprouts that grow on the rootstock at any time to avoid competing with the scion for nutrients.
Well, the above is all about the introduction of grapefruit trees. It should be noted that the planting of grapefruit trees must choose large flowerpots, otherwise its roots will not grow, resulting in malnutrition and inconclusive results. phenomenon.
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