At the end of autumn, when the weather turns cool and flowers enter the later stage of growth, it is necessary to control the application of nitrogen fertilizer, apply more P, K, Mg, B, Zn, Fe micro fertilizer and root promoting agent. At the same time, control the amount of water, promote the growth of plants, enhance their cold resistance. After entering the winter dormancy period, the middle ploughing was fertilized once, mainly by applying manure, manure, cake fertilizer, etc. to improve the concentration of soil solution and further enhance the cold resistance ability of open flowers.
Some perennial flowers and year-round grass flowers, such as peony, Canna, dahlia, tulip, etc., living in the open field of the courtyard during the winter are easy to suffer from frost damage or cold damage in the north of Huaihe River.
Generally before the cold current, the ground around the flower rhizosphere is covered with leaves, wheat straw, straw or plastic film to keep warm, keep warm and freeze. Remove these coverings after the late frost at the end of April the following year.
When winter comes, part of the ground is dormant, but the roots are still growing slowly, such as peony, hydrangea, hibiscus, osmanthus, rose, etc. Soil should be planted around the roots of these flowers to back up the roots. When the plants start to sprout in spring, the soil should be removed and the management of watering and fertilization should be carried out.
For some larger ornamental flowers and trees, because the trees are too large to be buried or covered, they can be protected against cold by wrapping fine grass rope, wrapping grass, wrapping paper and covering plastic film; for some flowers and trees with strong cold resistance and fear of cold wind or just planted, the method of setting up wind barriers can be adopted, that is, to the West and north of the flowers and trees, the materials such as reed mat, tree stick and corn straw can be used to set up wind barriers. For example, cedars and cypresses planted and bred in the north of Huaihe River can be protected against cold by this method. < spanstyle = "font family: Tahoma; color:
