Key points of fertilization techniques for flowers in autumn, know the prevention and control methods of edible fungus diseases

Nitrogen is a necessary element for the growth of flowers. The application of nitrogen fertilizer can promote the growth of branches and leaves, but different fertilization management methods are adopted for different flowers.

For dormant flowers in winter, topdressing a large amount of nitrogen fertilizer in autumn will induce the occurrence of autumn shoots. The occurrence of autumn shoots will not only consume the nutrients stored in flowers, but also affect the growth and flowering of flowers in the next spring, and because the dormancy time of flowers will be delayed after autumn shoots, and frost damage will occur when they encounter low temperature. Therefore, phosphorus and potassium fertilizer should be applied to winter dormant flowers in autumn, which can promote the accumulation of nutrients in flowers and lay the foundation for the growth and flowering of the second year.

However, it is not that nitrogen fertilizer can not be applied in autumn. Flowers that are not dormant in winter can still apply nitrogen fertilizer, especially foliage plants should still apply nitrogen fertilizer. However, attention should be paid to the combination of nitrogen fertilizer and phosphorus and potassium fertilizer. Reasonable application of phosphorus and potassium fertilizer can improve the cold resistance of flowers:

Plants that bloom in winter, such as Chrysanthemum morifolium, Prunus bungeanum, cyclamen, poinsettia and Lamei, are vegetative growth periods in early autumn, and fertilizers based on nitrogen fertilizer should be applied in early autumn. When fertilizing such flowers, phosphorus and potassium fertilizer should be used. Nitrogen fertilizer is supplementary, too much nitrogen fertilizer is not conducive to winter flowering.