The grafting of wampee can be done by cutting, budding or splitting, and the most suitable grafting time is spring (March) and autumn (September and 65438+1October). Rootstock can choose ordinary acidic seed Huangpi. When the fruit of Huangpi is fully ripe in July every year, take out the seeds, wash them and sow them immediately. Generally, it germinates half a month after sowing. After seedling growth, strengthen fertilizer and water management and pest control to promote seedling growth. Rootstocks can be grafted when the stem diameter reaches more than 0.8 cm, and live branches or annual branches with vigorous growth, full bud eyes and no pests and diseases are selected as scions on the improved mother trees. About half a month, the grafted buds will gradually shade. It is necessary to pull out roots, buds and columns in time, control pests and diseases, weed and fertilize. Take off the grafted buds in time and cultivate 23 branches. When the seedlings are over 30 cm high, they can be planted in the nursery.

To establish an orchard, it is advisable to choose a sandy civil garden with loose soil, deep and fertile soil layer and good drainage, and plant it in spring or autumn, with a high survival rate in 34 months. Plant spacing is 3m? ~? 4m or 2m~3m, planting 6,065,438+0,000 plants per mu. Before planting, we should dig a planting pit with a depth of 6080 cm and a width of 6080 cm, and apply base fertilizer. Because wampee root is shallow, it is not resistant to stagnant water and is not suitable for planting too deep. Intercropping can be carried out in the young tree period, but it is not suitable to plant crops that compete with wampee for fertilizer, water and sunshine. Young orchard management, fertilization and soil management: The main purpose of fertilization is to promote the growth of young wampee trees planted for 65,438+03 years and make them bolting many times in one year, thus rapidly expanding the crown and increasing the leaf area, laying a good foundation for early growth and high yield.

Fertilization should master the principle of diligent application and thin application. Fertilize the hair tips once a year in February, May and August. In addition, orchard intercropping, ground covering, irrigation and drainage, weeding, loosening soil, deep ploughing, soil improvement and so on. It must be carried out in time to create good soil conditions for the growth of young wampee trees. Shaping and pruning: The purpose of shaping and pruning young trees is to cultivate backbone branches, balance tree potential, adjust branch growth, and make them form a certain number of main branches and lateral branches, thus forming a solid crown skeleton, laying a good foundation for early fruiting and high yield.

The crown of wampee should be cultivated into a round head, truncated at the height of 7080 cm, and then 34 evenly distributed main branches should be cultivated, and which side of the main branch and branch should be drawn year by year to form a natural round head crown. The pruning of young trees is mainly light and short, and thinning is appropriate. During the vigorous growth of branches, the core can be removed properly to weaken the growth potential, stimulate the germination of 23 lateral buds under branches and promote the growth of branches. Every winter, the dead branches, shady branches, over-dense branches, over-flourishing branches and pests and diseases in the crown are cut off to improve the ventilation and light transmission conditions in the crown and prevent the occurrence of pests and diseases.