2. Pots and pot soil: Pots with diameters of 24 cm, 30 cm and above can be used for planting market seedlings. The persimmon seedlings that came out of the nursery in that year can be planted in pots with a diameter of 24 cm, and the perennial persimmon seedlings can be planted in pots with a diameter of 30 cm or more. Persimmon trees with larger trees can also be planted in a small jar with a pit size of more than 20 liters.
Potted soil is a kind of granular fertile soil which is mixed and piled up with abandoned leguminous crop straws in rural areas and field soil. After about 1.2 years, it is mixed with 1.2 compost soil+1.4 garden soil+1.4 sandy soil (or cinder), and nitrogen, phosphorus and coal are added to each cubic meter of potted soil.
3. Pot changing: When persimmon seedlings are dormant, put 1-2 pieces of broken tiles on the bottom hole of the earthen pot, spread a layer of coarse sand on the bottom of the pot, fill a part of earthen pot, put persimmon seedlings in, then fill the earthen pot, lift the seedlings, pat the edges of the pot and compact the earthen pot. When watering, the basin soil should not be too full to block water. Water it once after planting. Change the pot every 2-3 years, and choose a bigger pot, which should be carried out during the dormant period. After the potted persimmons with soil are taken out of the pot, the reticular root mat is cut off, about 1/4 of soil is removed from the roots, and then they are put into a pot like a pot, and the pot soil is added and watered once.
4. Fertilizer and water management: fertilization begins after persimmon germination. Use fermented organic liquid fertilizer, add water 10 times or more, and apply it every 7- 10 days. 0.3% urea solution can be applied in stages at the early growth stage. 0.3% potassium dihydrogen phosphate solution or 0.3% potassium sulfate solution can be applied twice during fruit expansion. In addition, 0.3% urea solution can be used twice before July, and 0.2% potassium dihydrogen phosphate solution or 0.3% potassium sulfate solution can be used twice during fruit expansion. When the weather is fine in spring and autumn and the temperature is high, water should be poured once a day, and when the weather is hot in summer, water should be poured once in the morning and evening. When the soil is dry in winter, water the basin soil.
5, plastic trimming:
(1) plastic. According to the size and use of the pot, the diameter of the pottery pot is 30 cm. The stem of persimmon tree is about 30 cm high and the tree body is about 80 cm high. Cultivate 5-7 backbone branches on the upper part of the trunk, and cultivate branches and fruiting branches on them to form a natural semicircle.
(2) pruning. When the young trees planted in that year were harvested from the main branches, they developed vigorously. In the case of sufficient fertilizer and water, leave about 20 cm for coring to promote secondary branching. The buds at the front end of the secondary branch can be differentiated into mixed buds. When pruning the backbone branches, select the short nodes with full buds and pay attention to the direction of buds to keep the balance of the backbone branches at the same level. When the mother branch is too long, cut off several buds at the front end, and the mixed buds at the back can also branch and bear fruit. Short fruiting mother branch is not short. Thin developing branches or fruiting branches are cut short to three buds at the base to promote them to grow better fruiting mother branches. Pay attention to the renewal and pruning of persimmon fruit in the full fruit stage, and do not cut or lightly cut some strong mother branches, and re-cut short branches to promote the growth of weak branches or weak branches in the fruit-bearing line.