I. Management before and after planting 2. After the planting, use three wooden poles to hold the big tree to prevent the wind from falling. Wrap the trunk with straw ropes to avoid sunburning the bark and reduce water evaporation. The newly planted trees spray water once a day before 10 o'clock in the morning and spray the wet grass rope to cool and moisturize the trunk. 3. After the planting, the backfill soil will be solid, once poured, and the water will be poured three times within 7 to 10 days. After that, it will enter the normal management and maintenance. Determine the amount of water through the soil moisture, take a soil sample of 30 cm below the tree pit, hold it in groups and throw it to the ground. If it spreads, it should be watered. The earth ball drops only cracks, wait for 3 to 5 days to check the soil moisture and determine the watering. It is necessary to do a good job in soil testing and record a lot in order to properly water it. 4. It should be noted that the demand for water from trees and grass is different, especially large trees. Watering lawns is like eating a little child. It takes less time, and the water can dip in a depth of 20 to 30 cm. The big tree is completely the opposite. Because its roots are very deep, it must be filled with water and irrigated with water. . The company where the author is located also has the phenomenon of watering the newly planted trees by the way when the lawn is irrigated. Although there are many times, there is no water, so the trees do not grow well. Therefore, the lawn and the trees are managed separately. Second, pruning Integral type 1. For newly planted trees, especially evergreen tree species, it is very important to trim. Taking Daguang Magnolia and Cedar as examples, we should begin with sparsely leafing, remove three-fourths of the original leaves, cut off the middle of the canopy and the small miscellaneous branches to ensure the consumption of water and nutrients. At the same time, we must pay attention to the beauty of the pruned tree, and use the net to shade it (covering both sides of the southwest) in time to reduce the evaporation of water and ensure the smoothness of the summer. After September, the shading net can be removed. 2. The newly planted tree cannot be over-cut for keeping it alive. The author had transplanted 18 large broad-bred magnolias, of which two stems had three lateral branches at the same height below. In order to ensure survival, the author cut all three side branches, resulting in a large trunk wound, affecting the growth of trees, new leaves issued very little. The trimmed wound can be sealed with a rust inhibitor. Third, a few experience 1. For new planting trees, in order to improve the survival rate, it is best to set up a special management team, the responsibility to implement, so that watering, fertilization, soil testing, drug fighters have recorded, while paying attention to weather changes . For example, the tree was watered for only 35 days, and the weather forecast had moderate to heavy rain. Therefore, the author covered it with old plastic cloth and removed it after the rain to prevent the rain from being excessive to the tree growth. 2. For fertilizing new trees, whether it is foliar fertilization or root fertilization, it is best to try them on small trees first, and after 7 to 10 days without harm, apply them to big trees. When we transplant large-scale seedlings (especially seedlings with diameters above 30 cm), the survival rate is relatively low, especially the difficulty of rooting. How can we reduce the risk and increase the survival rate?
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1. The basic work before planting trees should be done well. The earth ball excavated must be firmly tied with ropes, covered with canvas windproof during transportation, and the root system of the tree must be trimmed. Dig a tree hole according to the standard, apply 20 kg base fertilizer at the bottom of the pit, and use rooting powder. Three digs with a diameter of 50 cm were dug down from the bottom of the pit and drained when the watering was excessive. Planting trees cannot be planted too deeply, water is easy to accumulate, and air permeability is poor, which is detrimental to their growth. Backfill soil should ensure quality to ensure the growth of new roots.
