Landscaping spring maintenance knowledge!

Replanting and renewing varieties: Replanting and renewing varieties of seedlings is an important part of spring green space management. First, we must do a good job in replanting seedlings in green spaces, conduct a comprehensive survey and statistics on the seedlings that died during the winter in the green spaces under our jurisdiction, seize the current favorable opportunity to replant and replace them, and water them thoroughly in time to ensure the survival rate of newly planted seedlings. The second is to do a good job in the renewal of improved seedlings. Greening improved seedlings is the prerequisite for improving the green space landscape. With the rapid development of society, some original poorly growing tree species can no longer meet the needs of green spaces, and improved species must be replaced in time. Before germination in spring, high-end multi-head grafting can be used to achieve rounded heads in the current year and flowering and fruiting in the second year. Specific measures can include cleft grafting, cut grafting, and skin grafting.

Soil, water and fertilizer management: Soil, water and fertilizer management is an important part of seedling management. Due to drought in spring, rising temperatures and large amounts of water evaporation, soil management must be done well. Generally, measures such as cultivating are used to loosen the topsoil of seedlings, increase permeability, and prevent secondary salinization of the soil.

Top dressing and watering can meet the needs of seedlings for physiological activities such as germination, leaf expansion, and flowering. Each greening area must be watered with green water once, and appropriate amounts of fertilizer should be applied in combination with watering according to the growth characteristics of the plants. After the soil thaws, quick-acting nitrogen, phosphorus and potassium fertilizers should be topdressed, and organic fertilizers should be added. Fertilizers should not be applied all at once, but should be treated differently according to the growth and age of the seedlings. Apply more to trees that are growing well, and apply more to older trees. On the contrary, apply less to avoid having the opposite effect. Fertilization should be carried out between 20 cm and 25 cm away from the trunk. Pay attention to evenly fertilizing to prevent waste of fertilizer and root burning. Irrigate in time after fertilizing to improve fertilizer utilization efficiency. During the spring germination period of flowering shrubs, top dressing should be carried out outside the roots. Generally, spraying 0.5% urea mixed with 0.3% borax once or twice on the branches can make the flowering period consistent, make the flowers enlarged, and improve the ornamental value of the seedlings. In order to prepare for watering the green water, we should repair and maintain the water pipelines and water valves, repair the flower pond walls that are cracked by winter freezes, level the green space, and prevent "running, bubbling, dripping, and leaking" phenomena during the watering of the green water to ensure Smooth watering of green water.

Pest and disease prevention and control: Establish a forecasting system for pests and diseases, and assign dedicated personnel to be responsible for observation and monitoring work. Combining the occurrence patterns and growth habits of various pests and diseases, scientifically formulate prevention and control plans to achieve early detection and treatment to ensure the healthy growth of green space seedlings. In spring, it is necessary to conduct a comprehensive inspection of diseases and insect pests on green space plants, remove standing dead trees and seriously damaged seedlings in green space, dig out overwintering insect pupae, and scrape off old and rough bark before germination. The old and rough bark of the tree is the overwintering habitat for many pathogenic bacteria and insect eggs. If it is burned intensively, it can eliminate a large number of overwintering pests and overwintering pathogens, reduce the base of pests and diseases, and achieve twice the result with half the effort in pest control. As the temperature rises, it is necessary to promptly remove the cold-proof grass handles on pomegranates, figs and other seedlings, and clear the grass handles to keep them away from green spaces. Scrape the old tree bark before the seedlings germinate, and then spray 3-5 degrees Baume lime sulfur mixture on the green space seedlings to prevent and control diseases and insect pests.

Green pruning: pruning is carried out according to different varieties, types, locations and ecological characteristics of seedlings to ensure that the trees and pattern shapes can be cut into beautiful shapes while growing smoothly. Green space seedlings that have not been pruned in winter can be pruned again before flowering in spring to adjust the tree structure. First, we need to cut off the dead branches and dry leaves caused by last year's freeze damage. Then we need to remove some of the main branches, competing branches, and long branches on the back that are too dense and have too great influence to open up the light path, which will help improve the quality of the inner branches. . Thinning and pruning of densely packed branches, leggy branches, and branches that are too large on the periphery is beneficial to the relaxation of tree planting and ventilation and light transmission. For seedlings in new green spaces, especially flowering shrubs, the branch angles should not be opened. Those that did not open the branches last autumn should open the branches in the spring. Opening the branches of saplings is a key measure for early flowering and fruiting of saplings and improving their ornamental value. .

After pruning, the green space seedlings should achieve: reasonable tree structure and reasonable branch density, laying a good foundation for the future growth of the seedlings. In addition, we must do a good job in sanitation and cleaning of the green space, strengthen the daily inspections of garden management staff, and promptly remove plastic bags, paper scraps, stones and other garbage to ensure that the green space is clean throughout the day.