1, tree shape: mainly natural happy shape. That is, the whole tree has 30 primary main branches and 6-8 secondary main branches, each main branch has 2 lateral branches, and each lateral branch is divided into fruiting branches and fruiting branch groups. The height of the tree is about 2.5m, and the crown width is about1m.

2. Methods: The stem was fixed at a height of 80cm, and 34 new shoots growing between plastic belts were selected as the first-class main branches (the rest were erased), and they grew outward in different directions, with the branch spacing of10-20 cm; 2-3 lateral branches growing to both sides are selected as secondary main branches between 30-50 cm on the primary main branch, and the branch length is 40.50 cm; ; Selecting the culture fruiting branch and fruiting branch group on the secondary main branch, wherein the branch length is l0-20cm.

Extended data:

Collect seeds

Papaya blooms and bears fruit 3-5 years after colonization. It can be harvested when the exocarp is blue-yellow from August to September. Cut open the harvested fresh fruit, take out the seeds to dry, and select the full seeds to keep; Or, after the peel is air-dried in June 5438+065438+ 10, peel the fruit and take out the seeds for preservation.

grow seedlings

Papaya is a deciduous perennial tree. The quality of seedlings is directly related to the survival rate, growth rate, fruit setting and yield after planting, and has certain influence on adaptability, stress resistance and life span. Therefore, seedling raising is an important link in papaya production. Seeding propagation is the main propagation mode of papaya, and layering, cutting and grafting are also feasible. Before sowing and seedling raising, soak in alkaline water solution with proper concentration for 6-8 hours, take out and drain after soaking, mix with sand, sow in seedbed with row spacing of 20 cm, cover with straw thinly, keep moist, and emerge after 40-50 days.

The standard of strong seedlings is: short and strong, complete leaves, dark green, no pests and diseases. Weeding, loosening soil, fertilizing and watering should be done in time at seedling stage. Stay in bed or plant in the field the next spring. Longnan area can be sown from February to165438+10 every year. Spring sowing: sowing in February-April, sowing in April-May, with a seedling period of 50-70 days; Winter sowing: sowing in the middle of 10 to the early stage of 12, and the seedling stage is 120- 130 days. Winter sowing should pay attention to taking cold and warm measures.