1. Plastic decoration:
First of all, for flowers, ornamental trees and ornamental trees in the courtyard, plastic pruning in winter is undoubtedly the key link to create beautiful trees and increase their flowering period in the coming year. In winter, after the leaves fall, they can be pruned. Secondly, in order to create a rich plant landscape, more perennial flowers (such as day lily, Sedum, Paeonia lactiflora and so on) should be planted. ) often planted in the yard. Perennial flowers in Beijing began to wither from June 5438+065438+ 10. After the leaves wither, clean up the dead leaves and branches in time to reduce the hiding places of pests and diseases and prevent the occurrence of diseases.
2. Keep out the cold and wind:
The growth of plants needs more nutrition, which requires them to have more developed roots. Anti-freezing treatment is helpful for green plants to germinate early in the coming year and welcome the arrival of spring in time. The main methods of cold protection are: wrapping with straw rope or straw, spraying antifreeze, piling up soil, covering decomposed soil, etc.
3. Winter fertilizer:
The last fertilization of the growing season. Plants can store enough nutrients to resist the cold winter for up to 3 months, and can ensure early greening in the early spring of the following year. From mid-late September to mid-late June 10. Choose all elements of nitrogen, phosphorus and potassium and fertilizers containing organic matter, with long validity and comprehensive nutrition. The gully is buried 3-5cm underground and watered. If the soil is spread on the surface, organic matter can't improve the soil.
4. Frozen water:
It is very important for plants to spend the winter safely. Before the soil freezes, you need to pour a lot of water, commonly known as "frozen water", which must be poured thoroughly. According to experiments, when the water content in plants is lower than 70% of the normal value, it is easy to cause freezing injury, so many freezing injuries are not caused by simple low temperature. Be extra careful when constructing newly transplanted flowering shrubs or trees in late autumn, because the roots of newly transplanted plants have not been completely healed, the growth is not strong, and the backfill soil is not solid, which is prone to freezing injury due to lack of water at the roots. Insist on watering when it is particularly dry in winter.
5. Special maintenance of small shrubs and trees:
A. Whitening: Whitening the trunk of flowering shrubs and some fallen branches can penetrate and erode the body walls of germs and pests, killing pests and eggs. Whitening can prevent the bark from sunburn in winter. This work is crucial to prevent autumn pests and diseases.
B. Pruning: Prune all kinds of trees in late June 10, and cut off useless side branches as needed to promote the growth of main stems. Large-cut brush branches can effectively prevent pests and diseases from invading from wounds, which is not good for plants and the environment.
C. removing hay and fallen leaves: it can not only reduce the stay of overwintering pests and diseases, but also reduce the occurrence of fires.
D. Wrap straw rope: After painting, wrap straw rope around the trees with poor cold tolerance to help them keep warm and overwinter safely. Wrapped with straw rope and then supported can prevent the damage of supporting materials to newly transplanted trees in windy weather in winter.
It should also be noted that the irrigation amount of plants should be reduced in winter, especially in the north. If you water plants too much, the roots will freeze and the plants will die. It should also be noted that no fertilizer can be applied to plants, otherwise it will easily cause fertilizer damage to plants. In snowy days, it is necessary to deal with the snow in time to prevent unnecessary damage to plants. The beauty of the courtyard garden needs your careful care and the cold resistance of flowers and trees, so that the garden will be more beautiful when next spring comes.
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