How is Nata Oak maintained and managed in the garden?
The application of Nata Oak in urban greening is mainly because it has the characteristics of color leaf change, and in the actual application and construction of Nata Oak, it is necessary to analyze the difficulties of its planting construction, and take corresponding planting technology and post-maintenance measures according to the actual situation and specific requirements of the project, in order to greatly ensure the survival rate of Nata Oak tree species, in order to give full play to its true value in the municipal road greening project.
(1) Maintenance in planting. After the colonization of this project, the nata oak is watered three times continuously, the first watering is within 24 hours after colonization, the amount of water can penetrate the pit soil under 30cm, the main purpose is to fill the soil gap by watering, ensure that the roots of the tree are closely integrated, and at the same time check whether there is a crooked tree body and correct it in time; the second watering starts after the first 3d, the amount of water should be equivalent to the first time; the third time begins after the second watering 7d, this time to water thoroughly, to ensure that the amount of water can penetrate into the soil of the whole pit and the soil around the pit. In addition, because the project is located in a relatively empty position and is susceptible to high winds, all trees are supported and fixed.
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(2) Summer maintenance. The nata oak planted in this project encountered high temperature and drought weather in the first summer, and Jiangyin almost did not rain throughout the summer, the maximum outdoor temperature reached more than 45 °, Nata oak planted on the sidewalk, the tree cave is surrounded by concrete layers, poor air permeability, poor concrete temperature regulation ability, the surface temperature around the tree cave is more than 5 ° higher than the green ground, the road slab bricks recede slowly in the evening, the temperature rises fast at noon, and the temperature of the tree cave at noon is much higher than the temperature that Nata Oak can withstand, the form is very severe. In order to ensure the survival rate of Nata Oak, watering should be done before 8:30 in the morning or after 6:00 pm, and the ground around the tree nest and the tree cavity is paved with straw bales, and the straw bales are watered once every 2 to 3 hours to reduce the ground temperature to protect the root system of Nata Oak.
(3) Winter maintenance. The winter in Jiangyin area is still relatively cold, and the first winter of Nata Oak planting adopts the tree cavity re-soil method to keep warm, that is, to compound the 50cm thick soil layer on the planted tree cavity, and then cover the soil layer with a film to increase the frost resistance coefficient. The following spring, remove the film and remove the soil layer. Of course, it goes without saying that the rope around the trunk is wrapped around the tree.
(4) Pest and disease prevention. Common diseases of Nata Oak are powdery mildew, brown spot disease, and early baking disease. The phenomenon of powdery mildew occurs mostly from September to October, brown spot disease occurs in wet and windy years, and when the disease is severe, the leaves of Nata oak are scorched; the common insect pests of Nata oak are Xiao Huang palm boat moth, yellow two star boat moth and so on. The Nata Oak of this project has taken measures to spray the plant with chemical agents in the prevention of pests and diseases, and there has been no pest or disease phenomenon so far.