How to grow grapefruit

1. Maintenance methods

1. Substrate selection: Its root system is relatively developed and its requirements for soil are relatively high. The soil needs to be fertile and have good air permeability and water retention capabilities. At the same time, it is not easy to accumulate water and be over-watered. The humus content needs to reach more than 3%. Before planting, an appropriate amount of bone meal can be applied as a base fertilizer, which is conducive to its healthy growth.

2. Light management: It prefers light and is best grown in an environment with sufficient light. If it is planted in a brightly lit room, it may only bloom but not bear fruit.

3. Nutrient management: In the young tree stage before fruiting, the plant's root system is shallow and its ability to absorb nutrients is not strong, so water and fertilizer management should be strengthened at this time, and thin fertilizers should be applied frequently. Spring fertilizer in March, summer fertilizer in May and winter fertilizer in November are essential every year. It is best to use organic nitrogen fertilizer as the main fertilizer, which can promote its vigorous growth and flowering and fruiting.

4. Temperature management: It is relatively cold-resistant. The average temperature of its origin is 17.5℃. If the ambient temperature is low in winter, you need to take warm and cold-proof measures to help it survive the winter safely.

2. Breeding techniques

1. Reproduction method: It can be propagated by sowing or grafting, among which grafting is the main method. It is best to carry out it between March and June each year. After grafting, the soil should be kept moist as much as possible, and top dressing can be carried out after the scion has sprouted new leaves.

2. Pruning method: When pruning, try to retain the leaves as much as possible. After flowering, the number should be properly controlled. Deformed or overcrowded flowers should be removed in time to promote plant fruiting.

3. Problem diagnosis and treatment

1. Spots: Bacteria can easily cause canker disease, which causes the surface of the plant to become rough and produces canker spots with a diameter of about three to five millimeters. Once discovered, the diseased branches and leaves should be cut off in time, the diseased fruits should be cleaned up and burned on the spot, and lime sulfur should be sprayed according to the instructions to eliminate the source of the disease.

2. Pests: The more common pests include vicious leaf insects, red spiders, leaf miners, etc., which harm the leaves. Attention should be paid to prevention and control during the shoot growth period, and pesticides should be used to spray them in time.

IV. Other issues

1. Placement: It prefers light and is best grown in an open-air environment with full sunlight. If placed indoors, it may only bloom but not bear fruit.

2. Toxicity: It is non-toxic. Its peel and leaves can be used as medicine and can also be used to prepare aromatic essential oils. It has high practical value.