Cultivation techniques of Yangfeng Sweet Persimmon

Yangfeng sweet persimmon is a kind of persimmon, which is a Japanese variety. It is deeply loved by people because of its high fruit setting rate and good quality. Now it is also being planted in some areas. What are the cultivation techniques of Yangfeng sweet persimmon?

1. Land selection and preparation

Yangfeng sweet persimmon is suitable to grow in places with loose and fertile soil, good drainage and leeward to the sun, so calcareous soil, neutral soil or slightly acidic soil can be selected for soil selection. After selecting the site, it is necessary to turn the soil deeply, apply sufficient fertilizer, and then dig a cave with a height, width and depth of 1-0.8-0.6 meters respectively according to the distance between the rows and plants.

2. Select seedlings

Select the new varieties identified by the departments at or above the provincial level, which are suitable to be planted locally and suitable for promotion, or the varieties that have a long history of local cultivation and good growth and sales. The survival rate of 1 ~ 2-year-old grafted seedlings was higher. The height of the seedling is more than 1m, the ground diameter is more than 1.2cm, the length of the main root is more than 20cm, and there are more than 15 lateral roots, and the interface is good, substantial, robust and free of diseases and insect pests.

3. Planting seedlings

Plant the selected seedlings into the dug cave and finally cover the soil and pour a small amount of water.

4. Post-planting management technology

(1) Fertilizer requirements: when backfilling topsoil in winter, 50 kg of pig and cow manure or 1.5 kg of calcium, phosphorus and magnesium fertilizer should be applied to each plant. In the later stage, 6.5 kg of nitrogen fertilizer, 2.5 kg of phosphorus fertilizer and 0.6 kg of potassium fertilizer should be applied per mu, and suitable fertilizer should be applied according to soil fertility and plant growth in the rest of the time.

(2) Water requirements: sprout water, pre-flowering water, swelling water and overwintering water are generally watered to keep the soil moist.

(3) shaping and pruning: Yangfeng sweet persimmon is generally pruned once in young tree stage, adult stage and after fruit. In general, young seedlings only need to select 3 or 4 suitable branches as backbone branches, generally not short, and remove nearby weak and strong branches in the same direction. Now the natural happy shape of multi-main branches is generally adopted. When plastic surgery, temporarily retain the central trunk, cut off 1 beat 2 times 1 stick 3 every year, keep happy, once the crown is formed, cut off the central trunk; in the full fruit period, only need to remove too many large branches year by year, promote the growth of internal chamber branches, cultivate the fruiting branchlets group, support the large branches to grow outward and upward, gradually replace the original branches, and raise the angle of the main branches. The fruiting branches are generally not short, and dense branches, overgrown branches, cross branches and diseased branches are cut off to make the distribution of branches reasonable.

(4) Prevention and control of diseases and insect pests: persimmon cotton scale, persimmon stem insect, paramecium and other diseases and insect pests will occur in Yangfeng sweet persimmon, so in winter, diseased fruits, diseased stems, dead branches and fallen leaves should be thoroughly cleaned up to remove the source of overwintering diseases and insect pests. And spray a 5-degree stone-sulfur mixture or 95% oil emulsion 150 times before spring germination.