The effect of light on flowers
Illumination is the energy source of nutrients produced by flower plants. Without light, photosynthesis cannot be carried out, and the growth and development of flowers will be seriously affected. Most plants can only thrive in sufficient light. Different types of flowers require different lighting. Hua Yan Yun: "Yin Camellia, Yang Peony, Banyin and Yangyang Four Seasons Orchid". According to the different requirements of light intensity of flowers, flowers can be divided into positive flowers, neutral flowers and negative flowers. (1) Positive flowers. Most of the flowers of Guanhua and Guanguo are positive flowers, such as magnolia, Chinese rose, pomegranate, plum blossom, crape myrtle, and citrus. There are also a few positive flowers in the foliage-like flowers, such as cycads, palms, and altered wood. Most aquatic flowers, cacti, and succulents are also positive flowers. All positive flowers are bright and do not resist shade. Such as lack of sunlight, it is easy to cause the branches and leaves to be long, soft and weak tissue, pale yellow leaves, not easy to flower or flowering, susceptible to pests and diseases, (2) negative flowers. Growth and well-being under shady conditions, such as asparagus, camellia, rhododendron, maize, green radish, evergreen, ivy, gloxinia, monstera, begonia, etc., such as long-term exposure to light under the yellow leaves, Growth stagnates, serious, even death. (3) Neutral flowers. Growing in sunny conditions is good, but there is no principle in the summer when the light intensity is large, such as sweet-scented osmanthus, jasmine, white orchid, and hydrangea. In summary, all kinds of flowers have different lighting requirements and requirements, and even if they are the same kind of flower, the requirements for light at different stages of growth and development are not the same. The amount of light required for seedlings can gradually increase. Positive chrysanthemums require Form buds under short-day conditions. China Agricultural Network Editor