How to water trees after transplanting

Watering should follow the principle of not doing it and watering it thoroughly. The correct way is to water it immediately after planting. In order to ensure enough soil moisture, it is necessary to water the frozen water before freezing, and water the thawed water when the earth melts in spring, depending on the future situation. When it is found that the straw rope wrapped around the trunk or the wrapped straw is dry, the upper end should also be opened, and then tied after supplementary watering, and the straw rope should always be kept wet. For precious and extra-large trees, water should be sprayed on the tree crown frequently, once in the morning and once in the evening, so as to keep moisture and cool down. If necessary, potassium dihydrogen phosphate or 0.3% urea solution should be added with water spraying for root fertilization. In order to promote the rooting of big trees, ABT rooting agent was added when watering at the initial stage of planting. In order to restore the tree vigor as soon as possible, topdressing should be done in the autumn of the first year after transplantation. Fertilize 2 ~ 3 times in early spring and autumn in the second year, and topdressing outside the roots when necessary.