1. Soil preparation: substrate treatment is the basic condition. Before cultivation, select sandy soil with rich nutrition, divide the soil into layers, apply base fertilizer to each layer, add appropriate amount of straw, turf and branches and leaves as long-term fertilizer to the bottom, and apply appropriate amount of compost or cake fertilizer to the top.

2. Planting and planting: Because pomelo trees grow vigorously, it is best not to plant pomelo trees with excessive density. The spacing between rows should be kept at about 30-40 cm. Transplanting shall be carried out when 3-4 real leaves grow, generally in March of spring or June of autumn 165438+ 10, and planting is prohibited in rainy days.

3. Planting management: After plants are planted, they can be fertilized according to the principle of thin fertilizer and diligent application. Fertilize once a month from March to July or 165438+ 10 every year. Young trees mainly use nitrogen fertilizer, similar to manure or decomposed cake fertilizer solution, and a small amount of urea can be mixed according to the growth intensity.

4. Young tree shaping: after planting, if pruning is carried out at a distance of 30-40 cm and new buds are cut off, the tops of many main plants will be erased. When each main branch is 40 cm long, it needs to be cored and topped, only 2-3 branches need to be kept, and some intersecting branches can be cut off.

5. Disease prevention: pomelo trees often suffer from Huanglongbing, anthracnose, scab and so on. This kind of harm is mainly caused by bacteria, which generally damages branches, leaves or fruits. Therefore, in daily maintenance, the pot soil should be disinfected irregularly to prevent the growth of germs, and a proper amount of Bordeaux solution can be sprayed for prevention.