How do winter trees grow and manage?

How to plant and manage winter jujube trees? Please introduce the planting and management of winter jujube trees can refer to the following techniques: key points of cultivation: planting. This variety has strong adaptability, tolerance to drought and barren, and does not have strict requirements for fertilizer and water. The garden should be built with dense dwarfing cultivation, generally 2 to 3 × 3 to 4 meters, with 56 to 111 trees per mu, which plays an obvious role in increasing the early yield of young trees. Winter jujube has high requirements for light, and the row design should be the best in the north-south direction. Fertilizer and water management. Winter jujube has a high demand for phosphate fertilizer, which can be planted with 0.5 kg of superphosphate and 25 kg of organic fertilizer. Chemical fertilizer is applied once every year from late May, late June to early July and early August. In autumn, organic fertilizer was applied in furrow, 50 to 70 kg of farm manure and 0.5 to 1 kg of nitrogen and phosphorus fertilizer or the same amount of three-element compound fertilizer. Jujube trees were irrigated once before sprouting, before flowering, during the expansion period of young fruit and before overwintering, and irrigated properly according to drought at other times, drained in time in rainy season, and ploughed and weeded in time after rain. Ploughing and ploughing trees in autumn. Flower and fruit management. One is to pick the heart of the jujube head in the early flowering stage, leaving 3 to 5 secondary branches according to the strength of growth. Second, spray clear water, spray water every 1 to 3 days from the early stage of jujube to full bloom, a total of 3 to 5 times. Third, hormone treatment, spraying 10 to 15 mg / L gibberellin 1 to 2 times at the initial stage of flowering. Fourth, girdling, girdling and girdling. Plastic surgery and trimming. The tree shape of winter jujube should adopt small crown, sparse layer shape, maintain ventilation and transparent light, plant fixed stem height of 70 to 80 cm, and cultivate 5 to 6 main branches year by year. In winter and summer pruning, we should timely remove the long branches, cut short and lengthen the branches, and cut through the dense branches and weak branches, so as to maintain the balance of the tree potential, keep the crown ventilated and transparent, and withdraw the long fruiting branches in time. Renew and rejuvenate the local branches. Disease prevention and control. The main diseases and insect pests of jujube are leaf mite, peach heart borer, jujube Buqu, jujube rust, jujube fruit shrinking disease, jujube mad disease and so on. Spray 1000 times omethoate EC during germination and leaf expansion period for 1 to 2 times to control jujube buqu. During the occurrence of spider mites from late May to early June, 2500 times EC was sprayed 1 to 2 times, and pyrethroids pesticides were sprayed 2 to 3 times from mid-July to mid-August to control peach heart borer and jujube step koji. Spraying fungicide every 15 to 20 days in July, August and September can be used alternately with Bordeaux solution and carbendazim solution or methyl thiophanate wettable powder 1000 times solution to control jujube rust and fruit shrinkage disease. If jujube mad disease is found, the diseased branches should be cut off in light cases, and the diseased branches should be removed in time if the disease is serious. Click to get more jujube planting techniques click to get more fruit planting techniques