Key points of construction
Landscaping projects mainly include: balanced arrangement of garden earthwork, garden civil construction, garden decoration construction, wood structure, steel structure, small garden building, planting of large and small trees, shrub planting, flower planting and greening maintenance projects.
(1) Designated routes. Draw a line according to the plant spacing in the greening plan.
(2) Dig a pit. In the landscaping project, the width and depth of the pit are determined according to the size of seedlings.
(1)DBH 7 ~ 10cm trees, shrubs with a height of 2~2.5 m, evergreen trees with a height of 2.5~3 m (including boxwood with crown width 120 cm or more), the pit diameter should reach 100 cm and the depth should reach 70 cm. For seedlings below the above standards, the pit diameter and depth can be reduced appropriately; For seedlings above the above standards, the pit diameter and depth should be appropriately increased.
(2) For 3-4 year-old hedge materials, strip ditches or annular ditches with a width of 30cm and a depth of 30cm should be dug, with small seedlings shallow and large seedlings deep.
(3) soil replacement. After planting trees in construction waste areas or earth-rock slopes and digging out brick and lime stones, ripe soil should be taken from other places to fill the pit.
(4) Digging seedlings. When digging seedlings, try to protect the roots and bring more fibrous roots. Deciduous trees are thin in diameter, and the roots above 5 cm are not shorter than 20 cm. Evergreen trees should be wrapped with soil balls to ensure that the soil balls at the roots are not loose. The diameter of the soil balls is not less than 1/4~ 1/3 of the crown diameter, depending on the tree shape. Because the column is small, the cone is larger.
(5) transporting seedlings. After deciduous trees and shrubs germinate, some branches should be cut off for transportation; Evergreen trees should protect their branches and leaves as much as possible and keep the trees beautiful. Strive for the same day delivery and planting.
(6) planting. Before planting trees in the landscaping project, the split and broken roots should be trimmed, and the cut should be smooth and smooth to facilitate healing. The soil or root system should be disinfected where there are germs, and rare tree species that are difficult to take root can be soaked in rooting powder solution. Apply base fertilizer, pick out debris such as bricks and tiles, plant trees according to planting points, fill in half the soil and fill it with feet. The determinant tree planting requirements are neat and consistent; Cluster planting, arc planting and symmetrical planting should meet the design requirements.
(7) irrigation. Repair the tree tray or leave the tree pool immediately after planting, and water it on the same day. After one week, water it again according to the dry and wet conditions of the soil to ensure the survival rate of more than 95%.
(8) column. After transplanting the big tree, it is particularly important to support it with three pillars in time to prevent the tree from leaning after irrigation.
(9) pruning. In the landscaping project, after planting flowers and shrubs, the dead branches should be drained, the broken and bruised branches should be shortened, and the perennial branches should be properly retracted to promote the germination of new branches. After planting the hedge, you should stay and trim it, so that it is neat and beautiful. Clean up the site in time after pruning.
(10) Inspection and acceptance. Before the landscaping project is completed, the technicians will conduct acceptance inspection. After meeting the quality requirements, it will be managed by the greening unit.
Extended data
principle
1. scientific management and maintenance: establish a set of computer software for landscaping management system. Its contents include: greening archives, data collection, analysis and charts, that is, combining multimedia technology to realize dynamic browsing, mechanized maintenance and scientific management. Water and fertilizer management is the core of tree management, which should be watered thoroughly at one time.
2. Pay attention to shaping, pruning and weeding. Cutting adult trees to a certain height can stimulate the hidden buds in the hidden epidermis to germinate, form young branches and restore vitality. Weeds can be controlled by artificial weeding and spraying herbicides.
3. Take the principle of "prevention first, comprehensive prevention and control". Comprehensive control measures include plant quarantine, biological control, cultivation measures and chemical control. As mentioned above, the choice of tree species should be matched with each other to avoid planting two adjacent parasitic trees. If apples, pears, etc. Conifers and cypresses are planted, which are prone to rust. Street trees should also be changed at intervals to isolate diseases.
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