High-yielding Cultivation Technique of Black Grape

American black grape (black granules and Rebel), 500-700 grams of panicle weight, conical, grain weight 10-12 grams, thick skin, black, tough, hard and crisp flesh, fruit juice purple, containing Soluble solids 18%, very sweet, excellent quality. The number of growing days from the bud to the fruit ripening is about 160 days, and the fruit matures in the middle and late September. Due to the firmness of the fruit pieces, high hardness, no grain fall, and extreme resistance to storage and transportation, it is one of the fine late-maturing varieties and is welcomed by producers. However, grapes produced in the production of black grapes are extremely resistant to disease and susceptible to diseases such as blackpox and downy mildew. Management of extensive orchards is often caused by serious diseases and poor economic returns, resulting in the destruction of gardens. Here's a brief introduction of the high-yield, high-yield cultivation techniques for black grape.

First, build a park

Choose soil with loose soil, deep soil layer, groundwater level less than 1 meter, well-drained neutral or slightly alkaline soil (pH 6.0-7.5), use fences to plant, plant spacing 1 meter 2 meters, planted per acre 330 Strains. Before planting, planting trenches with a depth of 80 cm and a width of 100 cm should be planted with 3000-4000 kg of organic fertilizer per acre.

Second, soil fertilizer management

1, soil management

Take a grass cover in the tree tray and cover 15-20 cm thick wheat straw, corn stalks and other weeds on the ground. The depression of the vineyards in the tree trays can reduce the incidence of diseases.

2, fertilization

Basal fertilizer, after the fruit is harvested every year, 4000 kg of high-quality fertilizer is applied per acre, 70 kg of superphosphate and 250 kg of urea.

top dressing. In the first year after planting, when the new shoots grow to 30 cm or more, topdressing urea is 30-50 grams per plant. After one month, compound fertilizer is topdressed for 50 grams per plant; in August, potassium dihydrogen phosphate 30 grams is applied. In the second year after planting, top dressing was performed before flowering, after flowering, and during fruit enlargement period. Nitrogen fertilizer was dominant in the early stage and phosphorus and potassium fertilizer were the main components in the later stage.

Watering. In conjunction with topdressing, it is necessary to ensure the water supply after fruit set and fruit expansion. Water before the soil is frozen.

Foliar spraying fertilizer. 0.5-1% urea is sprayed in the bud; 0.3% urea and 0.3% borax are sprayed before flowering; various fertilizers are added in the growth season in combination with spraying; the former is dominated by nitrogen (0.3% urea), and calcium fertilizer and trace fertilizer are added. In the later stage, it was mainly phosphorus and potassium fertilizer (0.3% potassium dihydrogen phosphate).

Third, the plastic trim. Take single-armed arms V-shaped or fan-shaped pruning

Winter cut. Mainly in the short-truncated shoots, strong Wang main extension branches can stay 6-12 buds, dormant branches left 3-5 buds, weaker branches left 1-3 buds. The new shoots per acre are controlled at about 4,000 pieces, and the shelves are reasonably covered, and the picking and binding of the vines are performed in time. The result is that the branches are generally picked up 5-7 days before flowering, and the picking degree is 6-8 leaves above the panicle.

Fourth, flower and fruit management

(1) Sparse inflorescences are removed during the initial flowering period, generally 3000-4000 ear per mu. Each result branch generally leaves 1 ear.

(2) Spike tip before flowering, generally remove 1/4-1/5, remove spoilers. After fruiting, arrange the ears and remove the dense fruit. Generally about 60 grains per ear.

(3) Fruit bagging. Bagging can promote fruit coloring, bright color and bright, keep fruit powder and fruit surface clean, and can effectively control the occurrence of diseases, improve the quality of fruit, is an effective way to produce high-quality pollution-free grapes.

Bagging takes place in mid-to-late June. Spray 75% chlorothalonil 600 times before bagging. Optional special grape bags, can also be used for homemade newspapers. Cut the bottom of the bag 7-10 days before harvest to promote coloration.

V. Pest control

Black grape diseases and diseases mainly include downy mildew, black pox, powdery mildew, root cancer, and red spider.

(1) Dormancy period. Clean up the orchards, clean up dead branches, fallen leaves, stale fruits, etc., centralize burning, and reduce the number of pests and diseases.

(2) Before spraying 5 Baume degrees lime sulfur.

(3) Spray 70% mancozeb 1000 times and 40% quench 4000 times before inflorescence separation.

(4) Spray 70% thiophanate-methyl 800 times before flowering.

(5) Spray germicide every 10-15 days after flowering until the fruit is harvested. The use of the agent is: 50% 600 times poisonous copper, 64% antivirus 500 times, 78% Kobo 600 times, 70% calcium aluminum manganese phosphate 600 times, 800 grams of spray gram and 200 times lime The use of half Bordeaux mixture alternately provides good disease prevention.

Six, winter cold

In southern Shandong, it is safe to winter without burying in cold weather. In order to prevent the winter cold, you can cover the grass in the tree to prevent cold. Lubei and northern China need to be buried in cold weather.

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