The light quality ratio of 400wLED grow light is different for different plants. The ratio of some plants is listed below:

(1) Lettuce: The light sources of red and blue light 6:1 and 7:1 respectively for planting and seedling cultivation are the most suitable for its growth.

(2) Leek: The ratio of plant height, stem thickness, leaf width and other mass ratios of leeks under the red/blue 7:1 treatment was significantly higher than other treatments.

(3) Cucumber: 7:2 is the best ratio of red and blue light for the growth of cucumber seedlings. And the growth period of 7:1 is the best ratio of red and blue light.

(4) Strawberry, tomato: red and blue light 9:1 is good for full fruit and rich nutrition.

(5) Holly: Red and blue light are arranged according to the ratio of 8:1. Holly grows best, is strong and has a very developed root system.

(6) White radish: the most suitable light quality for growth: the ratio of red and blue is 8:1.

(7) Sprouts: The effect is the most obvious with the ratio of red, green and blue light of 6:2:1.

(8) Green vegetables and water spinach: 7:1 is the best ratio of red and blue light for the growth of green vegetables and water spinach leaves.

(9) Calla lily: For growth conditions, the ratio of 6:2 between red and blue light is the best.

(10) Lettuce: The ratio of red and blue light is 9:1, which is beneficial to the growth of lettuce.

(11) Anthurium andraeanum scorching sun: Comprehensive analysis, 7:3 red and blue light treatment is better, which is conducive to morphology, root growth and dry matter accumulation.

(12) Dendrobium officinale: Red and blue light 7:3, the proliferation effect is the best; at 6:4, it is more conducive to photosynthesis and material accumulation of seedlings.

Red light and blue light are the main light sources absorbed by plants, as well as signal light sources for the main photoreceptors of plants. Using 400wLED grow lights to supplement light with red and blue light sources can effectively control the length of cucumber seedlings, improve the quality of seedlings, and reduce the damage caused by physiological stress under low light conditions. The combination of red and blue light promoted the biomass accumulation of pepper, rice leaflet seedlings and lettuce plants.

The leaf area value of tomato seedlings under the condition of red/blue (2:1) supplementary light is the largest, while under the condition of red/blue (7:1) supplementary light, the value of leaf area of tomato seedlings is relatively small, indicating that the red light is increased The ratio can only promote leaf growth within a certain range.

Red light is conducive to the radial growth of rape stems and leaves. Appropriately increasing the proportion of blue light is beneficial to the lateral growth of stems and leaves, root development and photosynthetic pigment synthesis.

Increase biomass and nutrients. Low light conditions will reduce the soluble protein content of cucumber seedlings. After the red and blue fill light, the soluble protein increased significantly. The soluble sugar content and soluble protein content of tomato seedlings reached the maximum under red/blue (2:1) supplement light.

The 400wLED grow light red and blue mixed light source treats gourd and pumpkin seedlings with developed roots, high dry matter content, improved seedling index, and improved seedling quality; the increase of blue components in the red and blue mixture inhibits the elongation of the seedling stems and promotes the thicker stems.

The cotyledon area, soluble sugar, starch, carbohydrate, sucrose, and C/N of lettuce seedlings under 400wLED grow light red light and blue light are the largest, and are significantly higher than red light, indicating that adding appropriate amount of blue light to red light has a better effect. It is more conducive to the accumulation of carbohydrates in lettuce seedlings. 25% and 50% blue light treatments are conducive to the accumulation of lettuce biomass. The photosynthetic pigment content is more, the leaf area is larger, and the root system is developed, which is conducive to nutrients and water absorption, and the growth is better than other treatments. The chlorophyll content is greatly affected by the R/B ratio, and blue light significantly reduces the chlorophyll content of strawberry leaves.

Red light at 660 nm and blue light at 450 nm can adjust the chlorophyll content of lettuce. With the increase of blue light and the decrease of red light, the content of chlorophyll a and b gradually decreases. The net photosynthetic rate and stomatal conductance of cucumber seedlings treated with red and blue light were the largest. The net photosynthetic rate, stomatal conductance and transpiration rate of single red light and blue light are lower, but the intercellular CO2 concentration is higher. Appropriate increase in blue light can increase the antioxidant enzyme activity of tomato seedlings. As the proportion of red light increases, the activities of SOD, CAT and other antioxidant enzymes first increase and then decrease. Under R/B(2:1) supplementary light, SOD activity decreases.

In different growth stages, the blue light of 400wLED grow lights has different effects on the biomass of Wakata. The biomass increase in the early growth period is inversely proportional to the red/blue value, and in the late growth period it is directly proportional to the red/blue value. Blue-violet light can inhibit stem elongation. Compared with white light, blue-violet light significantly reduces the height of ginger plants and increases stem thickness. In terms of the effect of light quality on roots, oat plants treated with blue and violet light have more roots.

The red/blue (1:1) light energy combination can significantly improve the growth and quality indicators of lettuce; red/blue (7:3) is the most suitable light quality condition for cucumber seedling growth, and the maximum photosynthetic rate under light can reach a single color Red 4 times.

When the red/blue ratio is 8:1, lettuce shows a clear photosynthetic advantage. Adding yellow light to the red and blue composite light is beneficial to the synthesis of spinach photosynthetic pigments and significantly promotes the growth of spinach. Adding yellow light and purple light can increase the photosynthetic potential of cherry tomato seedlings and alleviate the red and blue weak light stress.

The light quality of 400wLED plants has a great influence on plant growth and development, photosynthetic characteristics, yield and quality. Green light and red light significantly promote the elongation of the stems of colored sweet pepper seedlings, and blue light has a dwarfing effect on the seedlings. The compound light has a better effect than monochromatic light, and it prolongs significantly under green light.

Red light is not conducive to the increase of chrysanthemum stems, and the stem length of the red light treatment is 43.0% less than that of the control. Red light is conducive to the sturdy stems of chrysanthemum plants. Increasing the proportion of blue light can effectively reduce the height of cucumber seedlings. Increasing the proportion of red light allows more photosynthesis products to be transported to the leaves of seedlings.

The chlorophyll a, chlorophyll b and carotenoids of lettuce all increased with the increase of the blue light ratio. After treatment with blue light or increasing the proportion of blue light, the chlorophyll content of plants increased significantly, and the photosynthetic rate increased significantly.

This shows that a higher blue light intensity ratio may be beneficial to the synthesis of photosynthetic pigments. The photosynthesis of plants with 7% blue light can proceed normally under the combination of red and blue light; as the proportion of blue light increases, the photosynthetic capacity of the leaves also increases, but when the proportion of blue light exceeds 50%, the photosynthetic capacity of the leaves will decrease.

Under single light conditions, the plant dry matter accumulation is more, the internodes are long, and the total sugar content is higher; the plant dry matter accumulation under single light quality is less, and the internodes are shorter, which inhibits the extension of the stem to a certain extent. Grow and grow. Red light treatment had the highest soluble sugar content in cucumber seedlings, and blue light treatment had the highest soluble protein content in cucumber seedlings.

Compared with the control, there is a significant difference. Red light treatment increased the chlorophyll content, stomatal conductance and transpiration rate of tomato seedlings, and the photosynthetic rate was significantly higher than other treatments; the blue light treatment had slightly lower chlorophyll content, but the photosynthetic rate was still significantly higher than that of the control, which may be due to blue light promoting stomata Open, increase the concentration of CO2 between leaf cells. The increase in plant leaf stomatal conductance is specifically induced by blue light.

For most plants, the red light of 400wLED grow light promotes the increase of leaf area. Under the red light treatment, the leaves of radish seedlings, toon seedlings, tomatoes, cucumber seedlings, tobacco, grass poison and lettuce expanded faster. Blue light can increase leaf area, but blue light inhibits leaf expansion of tobacco, poinsettia, and moss.

Adding blue light to red light can significantly increase the leaf area of lettuce. The leaf area of spinach in the red light, blue light and yellow light treatments was significantly larger than other treatments. Red light treatment is beneficial to the accumulation of dry matter in crops such as tomatoes, eggplants, cucumbers, and lettuce. The combination of red and blue light promoted the increase of the biomass of pepper, Phalaenopsis, Weiwei and cucumber. Adding green, yellow, purple, and white light to the combination of red and blue light has a significant effect on the biomass of lettuce, cherry tomatoes and non-heading Chinese cabbage.

The red light of 400wLED grow lights is conducive to the accumulation of carbohydrates in plants. Under red light treatment, the soluble sugar content of spinach, cucumber, pepper, tomato seedlings, and radish sprouts can be significantly increased. Red light can promote starch accumulation, which has been reported in crops such as soybeans, cotton, oil sunflower buds and rapeseeds. Because red light can inhibit the output of photosynthetic products in the leaves, so that starch accumulates in the leaves. The change of soluble protein content in leaves is one of the reliable indicators reflecting the physiological functions of leaves.

The blue light of 400wLED grow light is conducive to protein synthesis. Blue light promotes the soluble protein content of pea seedlings, lettuce, cucumber and bean sprouts. Blue light significantly promotes the increase of total amino acid and sugar content in chrysanthemum leaves. Blue light can significantly promote the dark respiration of mitochondria, and organic acids produced during respiration can be used as the carbon skeleton of synthetic amino acids, which is conducive to protein synthesis.

Compound spectra also have different promotion effects on plant photosynthesis. Yellow light is beneficial to the synthesis of soluble sugar and protein in lettuce, the formation of sucrose content in tomatoes, and the accumulation of free amino acids in rape buds.

The combination of low-dose UV-B and red light significantly increased the accumulation of sugar in tomatoes. Blue light and UV-A can promote the protein synthesis of cucumber fruits. The combination of blue and red light promotes the accumulation of soluble protein and soluble protein.

The red-blue-white compound light promotes the synthesis of soluble sugar and nitrogen content. The total starch content of tomato seedlings treated with the combination of red, blue and green light was the worst.

Through the above, we have discovered that the different light quality and light quality ratio of LED grow lights have different effects on different plants. Therefore, when choosing LED grow lights for your plants, you must customize them according to the light quality of your plants. This In order to give plants the best growth.