Fruit tree fertilization
First, finish the winter cut before March 10th. Second, in mid-March, renovation of water and soil protection facilities, and irrigation facilities in the orchard to repair channels. Third, fertilize fruit trees according to their age, tree vigor and soil fertility, and active ingredients contained in fertilizers. Fertilizer is mainly nitrogenous fertilizer, and phosphorus and potash fertilizers can be used together for furrows or caverns. Fill irrigation water once per day after fertilization. Fourth, in late March, after irrigation, when the soil is not sticky, the pine soil shall be preserved. When the tree buds are enlarged, spray 3 to 5 Baumedu limestone mixture (2.5 kg of quicklime, 5 kg of sulfur powder and 20 to 20 kg of water. 25 kg, made from wolfberry) to control overwintering pests. When sprayed, the entire tree body is sprayed fully to make the shoot buds completely stick to the medicine. V. Apricot flowering in late March. Attention should be paid to the weather forecast to avoid the harm of night cream. When frost occurs, it will cause great harm to flower buds, flowers and young fruit, which will result in reduced or no harvest. Therefore, the effective prevention of frost during flowering is one of the important measures to ensure apricot harvest. There are many measures to prevent frost damage. Take necessary measures before frost to eliminate or reduce frost damage. Flue-curing method and irrigation method are relatively simple and effective methods, suitable for large-scale adoption. The spraying of 500-2000 ppm of Qingxin in the buds of flower buds can postpone the flowering period by 4-6 days, so that the flower buds will be protected from freezing injury. When the flower buds are slightly white, spray lime milk (prepared according to the ratio of water and quicklime 5:1 and add 100 grams of diesel oil), which can also postpone the flowering period by 5 to 6 days. Fruit tree flower bud antifreeze sprayed 2 to 3 days before cooling, 100 grams of antifreeze added to 500 grams of hot water, and then add cold water. When the temperature falls below 0°C, add 15 kg of water; when the temperature is above 0°C, add 25 kg of water and spray once every 7-10 days.