Sunlight is a necessary condition for flower growth, and light intensity has an important effect on the growth rate and morphological structure of flowers. Regular sunshine can promote flower dormancy, and long sunshine usually promotes vegetative growth.
Due to the different light intensity and duration of different types of flowers, the flowers are generally divided into three types: positive flowers, negative flowers and neutral flowers. For example, negative flowers are azaleas. It likes to grow in a shaded environment. If it is grown under strong light for a long period of time, it will appear that the branches and leaves will yellow, the growth will stagnate, and may even die; and a short period of sunshine can promote the rapid growth of tuber begonia tubers. Stolons.
The purple and blue light in the solar spectrum can increase the concentration of petal pigments in flowers and plants. Like paeonia, the purple-red peony flower is formed due to the presence of anthocyanins. It is not easy to produce anthocyanins under low light and can only be produced under strong light. The illuminance sensor monitors by converting changes in light intensity into changes in electrical signals. According to the requirements of facility agricultural environment control for the growth of greenhouse flowers, the measurement range of the illuminance sensor is 0 to 200,000 Lux.
