The effect of light on flowers
Illumination is the energy source for the production of nutrients by flower plants. Without the presence of light, photosynthesis cannot be carried out, and the growth and development of flowers will be seriously affected. Most plants can only bloom when exposed to sufficient light. Different types of flowers have different lighting requirements. Hua Yunyun: "Yincha, Yang Peony, Banyin and Banyan Four Seasons". According to the different requirements of flowers for light intensity, flowers can be roughly divided into positive flowers, neutral flowers and negative flowers. (1) Positive flowers. Most of the flower viewing and fruit viewing flowers are positive flowers, such as magnolia, rose, pomegranate, plum, crape, citrus and so on. There are also a few positive flowers in the flowers of the foliage, such as sago palm, palm, and leafy wood. Most aquatic flowers, cacti and succulents are also positive flowers. Any positive flower is radiant and not shaded. If the sun is not enough, it will easily cause the branches and leaves to grow, the tissue is soft and weak, the leaves are light and yellow, not easy to flower or flower, easy to be affected by pests and diseases, (2) negative flowers. It grows well under the conditions of shade, such as Wenzhu, Camellia, Rhododendron, Hosta, Green Alga, Evergreen, Ivy, Gloxinia, Monstera, Begonia, etc. If the long-term outside is exposed to strong light, the leaves are yellow. Growth stagnates, severe or even death. (3) Neutral flowers. It grows well under sunny conditions, but there is no principle to shade the summer when the light intensity is high, such as sweet-scented osmanthus, jasmine, white orchid, and osmanthus. In summary, various flowers have different lighting requirements and requirements, and even the same flower, the requirements for illumination are different at different stages of growth and development, and the seedlings can be gradually increased when light is needed, and the positive chrysanthemum requires Flower buds are formed under conditions of short daylight.
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