When is the flower bud differentiation period of summer black grapes?

The grapes began to bloom in season and began to diverge into flowering the following year.

Summer black grapes generally ripen in mid to late July, need to be judged according to the planting area, cultivation methods, climatic conditions, greenhouses should be early, Jiangsu and Zhejiang will mature on July 20, the market ** in 20 yuan -40 yuan per catty, containing glucose and fructose, can supplement the amount of late burial, enhance physical strength, relieve fatigue, fruit acid can promote gastrointestinal peristalsis, clean up gastrointestinal garbage, reduce gastric acid toxicity.

Summer black grape origin.

Summer black grape is a hybrid variety from the fruit tree test field in Yamanashi Prefecture, Japan, and the main production areas in China are Hunan, Gansu, Qingdao and other places.

Xia Hei talks about the ripening time of fierce grapes.

Summer black grapes are suitable for growing in temperatures of 15-25 degrees Celsius, so it is best planted in March-April in the spring, with flowering from 10 to 20 May.

The number of days required for summer black grapes from flowering to fruit maturity is 100-115 days, which will bear fruit around June, and generally mature in mid to late July. The ** of its picking and listing is about 20 yuan to 40 yuan per catty.

Efficacy and role of summer black grapes.

Summer black grapes contain glucose and fructose, which can replenish energy, enhance physical strength, relieve fatigue, contain natural polymeric phenol, can enhance the ability to resist viruses, have a bactericidal effect, and the peel contains resveratrol, improve allergic symptoms, prevent cancer and fight cancer.

The fruit acid contained in summer black grapes can promote the peristalsis of the stomach and intestines, clean up the gastrointestinal garbage, reduce gastric acid toxicity, **gastritis, enteritis and vomiting, its roots, vines and leaves can be used medicinally, with diuretic, swelling, fetal effect, and also contain proanthocyanidins, which have the functions of anti-oxidation and anti-oxidation, can delay aging, and beautify the skin.

Summer black grapes generally ripen in mid to late July. Summer black grapes, an early-maturing seedless variety, cultivated in the open field, take 100-120 days from bud break to fruit ripening. Greenhouse planting, under the condition of controlling moisture and temperature, germinates about 30 days early, and matures about 30 days earlier than open field cultivation.

The origin of summer black grapes is Japan, and it is a European and American hybrid grape cultivated by crossing Kyoho grapes and seedless white grapes; Summer black grapes ripen earlier than ordinary grapes, and the fruit is purple-black or blue-black, with high sugar content, low acidity, seedlessness, and fragrant, sweet and crisp flesh. It has strong disease resistance, and the fruit does not crack and fall after ripening.

Grafted seedlings begin to bud in about 20-25 days. Grape grafting technology and grafting time grafting affinity is good, not only manifested in the good healing of the joint, but also manifested in the good influence of the scion varieties, so that the excellent traits of the scion varieties are perfectly expressed, no premature aging after grafting, long life grapes using young branches, buds grafting, not only scion timber saving, high survival rate, easy operation, long grafting time, and the unsurvived can be re-grafted, especially the high grafting of large trees is more ideal. 1. Choose rootstocks with strong growth and intact leaves.

After the grapes are harvested, pre-grafting fertilizer and water management is carried out. In case of dry weather, it is necessary to water thoroughly in advance. 2. Select the robust branches close to the base, high degree of lignification, and full bud body as scion.

Scion is best picked on the spot, such as long-distance transportation, must do a good job of moisturizing, and soak in clean water for a day and night. 3. The grafting part of the trellis grape is between 30 130 cm, each plant is grafted with 10 15 bud branches, and the current year's strong branches are selected at an interval of 20 30 cm on the main vine, and grafted at a distance of 5 10 cm from the base. 4. When grafting, first cut off the petiole of the scion from the base, cut off 1 2 from the back of the bud body, the cutting surface should be smooth, and then take the bud body as the center, cut the loss on both sides and leave 2 cm, stack it on the rootstock in the same direction, cut one at each end of the bud branch with a quick knife, and then remove the bud branch, cut off the tissue between the two channels, resulting in a gap consistent with the size of the bud branch, align the bud branch with the cambium layer, and finally tie the pin brother tightly with plastic film tape After the moon grapes fall leaves, the grafting wound has completely healed, and the binding can be released, leave 2 cm at the grafting site to cut off, and thin the rootstock branches that have not been grafted in the dust book.

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The first time the buds are carried out in the early stage of germination, this time the hidden buds on the old vines and the weak clear buds of the potato deficiency on the fruiting mother branches, the secondary buds in the multiple buds and the buds with poor growth positions; This time, you should keep as many buds as possible for the second handwriting to observe the selection of buds. Erase the weak buds on the fruiting mother branches.

The second bud should be carried out when the new shoots can be identified whether there is an inflorescence, the overall principle of this period is: the new shoots with inflorescences should be selected as much as possible, and when the number of new shoots is sufficient and the same fruiting mother branch has flower spikes after germination, the new shoots with inflorescences should be selected to leave the part (close to the main stem) to avoid the fruiting part to move outward; When the new shoots are larger and have fewer limbs and there is a gap on the shelf surface, the new shoots without inflorescence with utilization value can be selected according to the situation to fill the gap on the shelf surface. Erase the weak buds in the double buds and choose the strong ones with flower spikes.

Both buds have inflorescences, and the buds with inflorescences but poor growth should be removed, and the buds with inflorescence growth should be selected. The growth of the double buds is close to spring and has inflorescences, so the buds with a better growth position should be erased, and the buds with a better growth position should be selected.

Tips: Grape budding, first of all, to ensure that the orchard is reasonably loaded for the former brother bureau God, combined with the characteristics of the product, bud position, specific growth, cultivation and management habits and other comprehensive determination, inexperienced people should be late rather than early, envy to prevent mistakes in the orchard to cause a reduction in yield; Due to the differences in cultivars, climate, cultivation and management methods, etc., the above bud cultivation techniques are for reference only.

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Hunger and Wide Summer Black Grape Fruit Expansion Time is generally in June. Fruit expansion method: 15 days after the plant flowering, use 45-50 mg (the amount per kilogram of fruit) gibberellin solution with an appropriate amount of water, and then spray the fruit ear, and then repeat the spray every 12-15 days.

Summer black grape is an excellent rotten grape variety belonging to the order Rhamnosa, Vitis vinifera and Vitis vinifera, which has the characteristics of high yield, early ripening, storage resistance and good taste.

Budbreak occurs in late March, blooms in mid-May, and ripens in late July, taking about 110 days from flowering to ripening.

Summer black grape growth and fruiting habits.

The plant grows vigorously, and the germination rate of bud eyes is 85%. The branching rate is 95%, and each fruiting branch bears an average inflorescence. Hidden buds germinate with strong branch strength and high yield.

In Zhangjiagang area, Jiangsu Province, it sprouts in late March, blooms in mid-May, and ripens in late July, and it takes about 110 days from flowering to fruit ripening, which is an early-maturing seedless variety. It is highly resistant to diseases, and does not crack and fall after the fruit is ripe.

Fruit traits. The fruit spike is conical or has a disjointed shoulder, the fruit spike is large, the average spike weight is about 420 grams, the size of the spike is neat, and the fruit grains are tightly grown. The fruit is nearly round, the natural grain weight is about grams, it can reach grams after gibberellin treatment, the peel is purple and black, the fruit is easy to color and the color is consistent, and the ripening is consistent. The fruit powder is thick, and the skin is thick and crisp.

The flesh is hard and brittle, no meat sac, the juice is purple-red, the soluble solids content is 20%, there is a strong strawberry fragrance, no seeds, and the quality is excellent.

Cultivation points. 1. The variety is early maturing and high-quality, disease resistant, high yield, and has good storage and transportation resistance. Summer black is a triploid variety, the natural growth of the fruit is small, need to be treated with gibberellin, the fruit can be increased by more than 1 times, in the treatment concentration and time should be carried out in various places, so as to summarize the stable treatment concentration and method.

2. Trimming the ears and thinning the fruits The ears of summer black grapes are neat, with many shoulders and individual double spikes. It is recommended that if there are two spikes, repair 1. If the spike is too long, pinch off the spike tip 1 5-1 4 10 days before flowering.

3. Swelling treatment At present, in the domestic grape market, large-grain grapes are still favored. The fruit is enlarged, which is conducive to increasing the yield and increasing the value of the commodity. Summer black grapes grow naturally and have small fruits, which are common to seedless grapes, and are enlarged.

4. Fruit bagging Grape bagging has many benefits, such as disease prevention, insect pest prevention, bird pest prevention, pollution prevention, yield and quality. The berries produced are not only beautiful, but also delicious. It is recommended that whether it is field production or greenhouse cultivation, strive for a full set of bags.

5. Water and fertilizer management is the same as that of other varieties of grapes, and it is recommended to reapply organic matter fertilizer in the production of summer black grapes. When planting and building a garden, apply 5000kg of organic fertilizer every 667 square meters, and then expand outward along the side of the planting ditch every 1 year, open the ditch and apply organic fertilizer once, and apply 4000 5000 kg per 667 square meters. In spring, it can chase 1 fast-acting nitrogen fertilizer to promote germination and promote the growth of large fruit ears.

It's already on the market, and a lot of supermarkets are selling it.