Irrigation of frozen water in time
The whole life process of garden trees is inseparable from water. Although the evaporation in winter is small and the water demand is relatively small, it affects the cold resistance of garden trees and their growth and development in the coming year. Therefore, trees, especially newly planted trees, should be watered at 1 1. That is, "irrigation with frozen water". After irrigation, a mound is cultivated at the base of the tree by combining with frozen water. This not only supplies the water needed by the tree itself, but also improves the cold resistance of the tree.
Fertilize soil or land
After the treetops stopped growing in autumn, the root system showed another growth peak. Therefore, in late autumn and early winter, according to the age and planting time of the tree, some organic fertilizer or chemical fertilizer should be applied appropriately, supplemented by some shrubs, so that the fertilizer can penetrate, so as to promote the generation of new roots, enhance the tree vigor and lay a good foundation for the growth and development in the coming year.
Plastic trimming
According to the different application purposes of garden trees, correct pruning can not only adjust the tree shape, but also coordinate the relationship between the above-ground and underground parts, promote flowering and fruiting, and eliminate pests and diseases. This work can be completed around the "winter solstice". If the quantity is large, it can be extended to around the Spring Festival. According to the growth characteristics of trees, the dead branches, weak branches, pests and diseases branches are cut off together, and the overgrown branches are properly retracted to improve the ventilation and light transmission conditions inside the crown and cultivate an ideal tree shape. For larger wounds, drugs and lead oil should be used for disinfection to protect the wounds.
A box painted white
Whitening the trunk in winter can not only reduce the harm caused by the large temperature difference between day and night, but also eliminate the pests and diseases that overwinter in the cracks of bark. The formula of whitening agent is calcium lime 10, salt 1 0, sulfur powder 1 0 and water 40. This work can be carried out in June 1 1.
Clean up weeds and fallen leaves
The defoliation of weeds is not only a wintering place for some diseases and insect pests, but also prone to fire in dry and windy winter. Therefore, the fallen leaves of weeds in the green space should be cleaned up and treated centrally, which not only eliminates the source of pests and diseases, but also eliminates the hidden danger of fire.
Cut down dead trees
Due to various reasons, such as aging of trees, invasion of pests and diseases, man-made destruction, etc. Some trees died, which destroyed the whole landscape and affected the city appearance. You can use your spare time to cut down those irretrievable trees as soon as possible and replant seedlings of the same specifications.
7. Seed propagation of woody plants
For many years, seed propagation has been the main propagation mode of many woody plants. In the production of large-scale planting, the cost of breeding with seeds is very expensive, but the requirements for seed storage equipment are very simple. Seed propagation is mainly applied to plants that cannot propagate through vegetative organs. The disadvantage of seed reproduction or sexual reproduction is mainly the long growth period of plants.
If you propagate through seeds, it is very important to harvest them in time once the fruits are ripe or before the seeds are scattered. If the fruit is harvested immediately after ripening, some varieties will germinate quickly, but if the seeds have dried on the trees, the seeds need to be pretreated.