1. Tree shape: mainly natural happy shape. That is, the whole tree has 3 first-class main branches and 6-8 second-class main branches, and 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 about 1m.

2. Methods: The stem was fixed at the height of 8cm, and 34 new shoots growing between the plastic belts were selected as the first-class main branches (the rest were erased), and they grew outward in different directions, with a branch spacing of 1-2cm; Between 3-5cm on the primary main branch, 2-3 lateral branches growing to both sides are selected as secondary main branches, and the branch length is 4.5cm；; Selecting culture fruiting branches and fruiting branch groups on the secondary main branches, wherein the branch length is l-2cm.

Extended information:

Seed collection

Papaya blooms and bears fruit 3-5 years after colonization. Harvest can be carried out from August to September when the exocarp is bluish yellow. Cut open the harvested fresh fruit, take out the seeds and dry them, and select the seeds with full seeds to keep; You can also cut the fruit and take out the seeds after the peel is air-dried in November, and keep the seeds.

Seedling raising

Papaya is a deciduous perennial tree. The quality of seedlings is directly related to the survival rate, growth rate, fruit bearing 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 and propagation are the main breeding methods of papaya, and layering, cutting and grafting are also feasible. Before sowing and seedling raising, soak in a proper concentration of soda solution for 6-8 hours, after soaking, take out and drain, mix with sand, sow in the seedbed with a row spacing of 2 cm, cover with straw thinly, keep moist, and emerge after 4-5 days.

the standard of strong seedlings is: short and strong, complete leaves, dark green, no pests and diseases. Weeding, loosening, fertilizing and watering should be done in time at seedling stage. Stay in bed or plant in the field in the spring of the following year. Longnan area can be sown from February to November every year. Spring sowing: sowing in February-April, planting in April-May, and the seedling stage is 5-7 days; Winter sowing: sowing from mid-October to early December, with a seedling period of 12-13 days. Winter sowing should pay attention to adopting cold-proof and warm-keeping measures.