The main technical points of persimmon cultivation management

First, grafting

1, branches. The scions were collected before the sap had flowed (mostly one month prior to grafting) and the annual strong shoots were collected and the shoots were full, free of pests and diseases. Wax or sand. Store at a low temperature below 5 degrees. The grafting time is from mid-March to early April. When grafting, the scions cannot germinate, and 3 to 4 full shoots are kept on the cutting surface. Before the sap has not flowed, it can be spliced, cut off the wood, cut a knife with a vertical section of the cross section, and cut both sides of the scion into a wedge shape, insert the cuttings, and form a layer on at least one side. If the wood is coarse, insert another scion on the other side of the incision to form a layer on one side. After the sap flows (skinned), it is inserted into the skin. Scion cut into horseshoe shape, noodles longer than 2 cm, to be smooth, the opposite side is cut into small horseshoe shape, length 0.3 ~ 0.5Cm, so that the lower end of the wedge-shaped, easy to insert. Cut off the wood at the grafting site and open a 1-2 cm cutting edge on the smooth side, then insert the sharpened scion, slightly white. It is then tied tightly with plastic strips.

2. The buds were picked up from June to July. They used "T" to open buds and square buds. Persimmon twigs contain tannins, which are susceptible to oxidative discoloration at the wound site and affect survival. Therefore, it is required that grafting be completed at the fastest speed.

Second, soil and water and fertilizer management

In late autumn or early spring, deep ploughing or deep-casting of tree trays is performed in combination with fertilization. Do not plant high pole crops around the saplings.

The saplings catch 0.3-0.6 kilograms of urea per plant in the germination period. The fruit trees are topdressed once in April and July. Each time, 1.2-2.0 kilograms of urea are applied to the saplings. In June, July and August, 0.3% urea and 0.3% dipotassium phosphate were sprayed once. In March, June and October, we poured water one at a time.

Third, shaping pruning

The dry height is 0.8-1.0 meters. With the tree shape, because the tree is trimmed. Ventilation and light transmission, the principle of uniform distribution of branches.

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IV. Pest Control

1, persimmon keratopathies: the garden is not mixed with the plant to regenerate, remove litter, cut off the remaining persimmon and dead branches. In the middle of June, thiophanate-methyl and Bordeaux mixture were sprayed.

2. Scrawny beetles: Plowing 10 centimeters deep in the late autumn and early winter, licking the oocysts and burning them. In January, glued shellac, tape, or plastic film skirts were applied to the smooth surface of the trunk. Spray 3 to 5 degrees lime sulfur and avermectins in the spring.

V. Harvesting and astringent storage

The astringent persimmon varieties that are eaten by persimmon persimmons are gradually picked when they turn yellow. Fresh and late-maturing varieties of persimmon fresh and dried persimmons are harvested when the orange-red color is not softened.

Hard persimmon off astringent: 1 cold water off astringent, soaked in cold water, 2 days for a water, 7 days can be astringent; 2 warm water off astringent, soaked in 45 to 50 degrees of water, cover strict, 1 to 2 days can be off astringent , not easy to store; 3 lime water off the astringent, water: lime = 100:4, persimmon fruit soaked, stirring once a day, 2 to 3 days can be astringent.

Soft persimmon off the astringent: 1 mixed fruit off the astringent, the sand fruit, cherries and other scented fruit and persimmon mixed together, 50 kilograms persimmon mixed 2.5 to 5 pounds of other fruit, closed 3 to 5 days can be off astringent; 2 Astringent alcohol, layered into the container, and spray evenly layered white wine (per kilogram persimmon fruit with white wine 4 ~ 5 ml), sealed, about 5 days can be off astringent.

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