1. Management points of young trees of summer black grapes 1. Topdressing and promoting growth: Fertilization follows the principle of thin fertilizer and diligent application. Generally, topdressing begins after 8 leaves are spread, once every 10 to 15 days. The application of quick-acting nitrogen fertilizer is mainly used, from April to May with 0.3% urea or 0.5% carbon ammonia solution; the roots of seedlings are applied after breaking the film. From June to July, topdressing of 0.3% to 0.5% compound fertilizer; after August, the main application of phosphorus and potassium fertilizer; topdressing until the end of September. 2. Tie vine shaping: After the seedlings are planted, set up a cement column in time and tighten the wire. The planting seedlings are inserted with a bamboo pole, and when the new shoots grow to 50 to 60 cm, the vine is introduced to the pole, and the work of binding the vine, removing the tendril and removing the heart is promptly done. The “Vâ€-shaped horizontal frame and the high-width vertical T-shaped frame are topped off at the first wire, leaving two auxiliary tips on the top, leading to the left and right sides to grow, forming two arm vines; when the horizontal scaffold is approaching the shelf surface Topping out. 3. Spraying against pests and diseases: The first year is mainly to prevent and cure acne and downy mildew. After spreading 3 leaves, spray fungicides every 8 to 10 days to prevent disease. You can alternately use Kebo, Poke, Kero, etc. In the middle and later period, add Baolifeng No. 1 or No. 2 at the same time. Add insecticide when spraying. 4. Winter shears: Winter shears are cut at the joints of two arms. 2 to 3 buds are left on the accessory shoots of the arm vine with a diameter of ≥0.5 cm, and less than 0.5 cm are cut off. For seedlings that have not grown to the first wire, cut 2 to 3 buds at the base and reshape them in the second year. Leave 3 to 4 branches on the shelf surface of the scaffold. Second, the management points of the summer black grape mature tree 1. Fertilizer and water management: the rainy season in the southern and rainy areas, the fruit growing season from March to June is in the rainy season, the focus is to do trenching and drainage work, and open deep trenches to build high borders. Pay attention to timely irrigation during the drought season from July to August to prevent early leaf fall. Weed control is carried out in a timely manner during the growing season. Weeding is mainly artificial and chemical control is supplemented. After the leaves are dropped every year, the garden is turned over with autumn fertilizer. Adult trees use fertilizer 5 times a year. â‘ Sprout fertilizer. From the end of February to the beginning of March, 5 to 10 kg of urea and 25 kg of superphosphate were applied per mu. â‘¡ Swelling fruit fertilizer. From flowering to the expansion stage of young fruit, 200 kg of rot cake fertilizer, 30 kg of ternary compound fertilizer, and 10 kg of potassium sulfate were applied at an interval of 1 week and applied twice per acre. â‘¢ Colored fertilizer. At the early stage of fruit color change, 20 kg of potassium sulfate was applied per mu. â‘£ Fruit picking. After the fruit is harvested, apply 25 kg of ternary compound fertilizer and 10 kg of urea in time. ⑤ Base fertilizer. In the first and mid-October, the base fertilizer was deeply applied, and 2000-3000 kg of organic fertilizer such as pig manure and 50 kg of calcium, magnesium and phosphate fertilizer were applied per mu. 2. Branch management: â‘ wipe shoots to fix shoots. After budding, wipe off double buds, multiple buds, and weak buds; after forming new shoots, use V-shaped horizontal frame, high and wide vertical frame, the pitch of the shoots is fixed at a pitch of 15-20 cm, and the same position is about 8 leaves 10 days before flowering Cut the tip to make the winter buds in the base and middle full, and increase the inflorescence. â‘¡ Ring stripping. When soaking the first swelling agent, ring stripping is carried out on the main branches. The width of the ring stripping is generally 2 to 3 millimeters, and the depth is as deep as the xylem, which can increase the fruit size. The berries are peeled off at the beginning of the coloring and can be ripened early. â‘¢ Winter shears. It should be carried out after deciduous leaves and before the spring bleed period, and it is appropriate to pruning from late December to January. 3. Flower and fruit spike management: â‘ Set spikes according to yield. The ears are set according to the fixed production index in production. The panicle weight is 500 grams and the panicle is 2000-2500 panicles, and one vine can only fix 1 panicle. â‘¡ Sparse flowers and fruits. One week before flowering, the ears should be sparse. If the ears are too long, pinch off the tip 1/5～1/4 to keep the cylindrical ears. Each ear retains about 70-80 grains. â‘¢ Application of growth regulators. The first time can be treated with gibberellin 25 mg/L (or double the amount of swelling agent plus water) before a physiological fruit drop at the end of the flowering period (6th to 10th day of initial flowering). The second treatment is at the size of the soybeans (about 22 days after the beginning of flowering), soaking or spraying the ears with a swelling agent to increase the size of the fruit. â‘£ Fruit bagging. Grape bagging can reduce disease, insect, bird damage and pesticide pollution. The berries produced are beautiful and have a lot of fruit powder. 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