Red Rose Grape was bred by Japan's Zhiyuan Grapes and is an Eurasian species. It was introduced in 2004 to Zhenjiang Wanshan Red Farms, which features high-quality, high-yield, late-maturing, and storage-resistant. The successful introduction of this variety has enriched the structure of grape varieties in Zhenjiang City, prolonged the supply period of grapes, filled the gaps in the market, and in recent years the price is high and the economic benefits are good.
In Zhenjiang, the red rose grape sprouts around March 25th, before and after May 10th, before and after May 15th, lasts around May 20th, begins to mature before and after August 20th, ripening period can be extended to 10% In early January, the deciduous period begins in early December. Cone-shaped ear, soft cob, moderate elasticity of ear shape, beautiful appearance, average ear weight 800 to 1600 grams; fruit oval, grain weight 9 to 11 grams, fine but strong fruit stems, can not afford to fall; peel bright red , There is Fruit Powder, a little thick and tough, not easy to crack fruit, fruit flavour rose, sugar content of 19% to 20%; resistance to storage and transportation, can be hung in the tree until mid-October. The tree vigor is strong, and there are basically no leggy branches. The flower buds are well formed and the yield is strong under the condition that the leaves are in good condition and the maturity of the shoots is high. Each new branch basically has spikes; the result is the fifth to sixth sections. There are about 1.2 fruit spikes per shoot. The variety should be cultivated on a perrowrow with a row spacing of 4 meters; the yield is good, and the average annual yield is 3kg in the second year after planting, and the 6th to 9th kg in the third year.
Red Rose Grapes are not well adapted to the warm climate and have relatively poor disease resistance. They are vulnerable to disease in the rainy, high-temperature, and high-humid areas of the South. They must be sheltered from rain and cannot be cultivated in open fields. The rain-fighting cultivation techniques are described below.
Selection of shelter facilities There are three common shelter facilities: steel greenhouses, multi-story greenhouses, and small rain shelters. The experimental investigation found that shelter construction is simple and the cost is low. The fruit quality and yield of the variety show obvious advantages. Concrete construction method: reinforce a 1.5 meter long beam and a 0.8 meter pillar at the top of the cement pillar, pull a 10th wire at both ends of the beam and the top of the column, and use bamboo to make the arch ring. The two ends of the bamboo ring are fixed on the wire. The distance between the bamboo rings is 1 to 1.5 meters; the bamboo rings are connected and straightened with iron wire, and the two anchors are tensioned and fixed; the film is fixed with bamboo pressure on the arch ring of the scaffold, and the bamboo leaves are tied on both sides of the film. Tight on the wire. In the first year after planting, it can be cultivated in open field, and after the second year, it must be sheltered from rain. Cultivating racks are mainly double "10" and "V" shaped racks and high "V" shaped racks.
The fruit and flower management timely removed the under dense membrane shoots, plucked the hearts and processed the shoots, and removed the old leaves. The whole panicle begins 1 week before flowering, and the fruit set begins 1 week after flowering. The new shoot tipping and wiping off secondary shoots results in only 1 fruit per new shoot. When the size of the young fruit is clear, the grains will be sparse, and when the peanuts are large, the fruit will be bagged and sprayed before the bagging. The cultivation of shelter from the rain has a certain influence on the coloring of the ear, and attention should be paid to improving the ventilation and light transmission conditions, and the reflective film can be used under the shed under certain conditions.
Fertilizer and Water Management This species of young tree is resistant to drought and drought. After planting, adequate watering is required. Before the growth, pouring manure water, once a week, its concentration gradually increases with plant growth. In mid-August, phosphorus and potash fertilizers were changed, and in May-August, 0.2% potassium dihydrogen phosphate solution was sprayed once or twice a month. Mature trees should be replanted with basal fertilizers, followed by budding fertilizers, expanded fruit fertilizers, and coloring fertilizers, along with foliar sprays. After harvesting fruit, combined with deep-rooted loose soil fertilizing, 2,000 tons of farmyard manure per acre, 50 kg of calcium, magnesium and phosphate fertilizers; 10 kilograms of urea and 30 kg of compound fertilizer per acre in the first half-month of germination, irrigation after fertilization; Fruit enlargement period applies 30 yuan of compound fertilizer per acre, applied twice a week at intervals; apply 20 kg of potassium sulfate and superphosphate per acre. From the young fruit stage to the fruit coloring period, spray 0.3% potassium dihydrogen phosphate solution once every 7-10 days and spray 4-5 times. According to soil moisture and grape growing conditions, timely replenishment, the best drip irrigation.
Pruning pruning Winter pruning chooses to keep the development of full, buds full of branches as the result of the mother branch, leaving every 30 cm. Red roses have a strong growth potential and their apical dominance is obvious. Young shoots are ripe late, and during the growing season, they must pay attention to picking. Generally take 2 to 7 days before flowering to start topping, leaving 5-8 leaves above the spike to pick up the heart; to pick the heart after picking up the secondary shoots, leaving a tip at the top to leave 2 leaves topping, leaving the second secondary leaves to repeat Topping; the lower side of the lateral axillary leaves a leaf topping and promote flower bud differentiation.
Prevention and control of pests The main diseases of this species under rain-fed cultivation conditions are downy mildew, gray mold, powdery mildew, white rot, black pox, and anthrax. The main pests are red spider mites, leaf mites, and whiteflies. Night moths, etc., pay attention to prevention and treatment.
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