How do different options of red and blue ratios of LED grow light affect plant growth?

When the red light component of the LED plant growth lamp increases, the light energy in this spectrum is efficiently absorbed by the photosynthetic pigments in the plant leaves, thereby stimulating physiological reactions within the plant. Specifically, the enhancement of red light can promote hormone balance in plants, especially hormones related to flowering, such as gibberellins and cytokinins. An increase in these hormones makes it easier for the plant to enter the flower bud differentiation stage, which is the transition from vegetative to reproductive growth. During this process, the plant begins to form flower buds in preparation for flowering. As the ratio of red to blue increases, the intensity of red light further increases, which not only accelerates the differentiation of flower buds, but also makes the flowering process faster and smoother. At the same time, red light also helps to improve the photosynthesis efficiency of plants, allowing plants to synthesize and accumulate nutrients more efficiently during flowering, providing sufficient energy and material basis for the growth and maturity of fruits. In addition, red light can extend the flowering period of plants. The extended flowering period means that the plant can photosynthesize and absorb nutrients for a longer period of time, which not only contributes to further ripening and quality improvement of the fruit, but also increases the overall growth rate and yield of the plant. Because during the extended flowering period, plants are still undergoing photosynthesis and accumulating more organic matter, which provides good conditions for further fruit development.

Blue light also plays an indispensable role in the growth process of plants, especially in promoting the growth of young leaves and the elongation of stems. When the blue light component in LED grow light is relatively high, this specific wavelength of light stimulates the growth points of plants, prompting the plants to grow more vigorously. Specifically, blue light can promote cell division and elongation in plants, thereby accelerating the growth of young leaves. Young leaves are the main organs of plants for photosynthesis. Their rapid growth helps plants better absorb light energy and convert it into chemical energy to provide energy for the growth of the entire plant. Blue light can also promote the elongation of plant stems. The stem is an important part of the plant that supports leaves and fruits. Its elongation allows the plant to better utilize space and increase the expansion area of the leaves, thereby improving the efficiency of photosynthesis. Under the irradiation of blue light, the cell division and elongation of plant stems accelerate, making the plant as a whole show a more erect and lush growth form. In addition to promoting the growth of young leaves and the elongation of stems, blue light also helps shorten the node spacing of vegetables. Node spacing refers to the distance between two adjacent nodes on a plant stem. Under the irradiation of blue light, the distance between vegetables' nodes is shortened, making the leaves more compactly arranged on the stems, which helps to increase the photosynthetic area of the plants and improve the efficiency of light energy utilization. Blue light also promotes lateral stretching of plants. Under sufficient light conditions, blue light stimulates the lateral growth of plant leaves, making the leaves wider and flatter, which is beneficial to increasing the light-receiving area of the leaves and improving the efficiency of photosynthesis. At the same time, the horizontally extending leaves can better block sunlight, reduce direct exposure and scattering of light, and provide more stable light conditions for the growth environment inside the plant.

In addition, different settings of the red-to-blue ratio will also affect the photosynthetic efficiency of plants and the accumulation of secondary metabolites. A reasonable red and blue ratio setting can help increase the photosynthetic rate of plants, increase the content of chlorophyll, and promote the accumulation of soluble sugars, organic acids and other substances in plants. At the same time, the content of secondary metabolites in plants will also change under different red and blue ratios, which has an important impact on improving the stress resistance and quality of plants.

It should be noted that different plant species and growth stages have different requirements for the red-to-blue ratio. Therefore, when selecting the red-blue ratio of LED grow light, it needs to be adjusted according to the needs of specific plant types and growth stages to achieve the best growth effect. At the same time, you can also monitor the growth status of plants in real time through the APP's intelligent control function, and adjust the red and blue ratio as needed to achieve more precise supplementary light management.