The effect of led plant light on the nutritional quality of grapes in greenhouse
The proteins, sugars, organic acids and vitamins contained in fruits and vegetables are nutrients that are beneficial to human health. Light quality can affect the content of VC in plants by regulating the activity of VC synthesis and decomposition enzymes, and has a regulatory effect on protein metabolism and carbohydrate accumulation in horticultural plants. Red light promotes the accumulation of carbohydrates, and blue light treatment is beneficial to protein formation. The combination of red and blue light can improve the nutritional quality of plants significantly higher than that of monochromatic light. Supplementing LED red or blue light can reduce the nitrate content in lettuce, supplementing blue or green light can promote the accumulation of soluble sugar in lettuce, and supplementing infrared light is conducive to the accumulation of VC in lettuce [30].
Supplementing blue light can promote the increase of tomato VC content and soluble protein content; red light and red-blue combined light treatments promote the sugar and acid content in tomato fruits, and the sugar-acid ratio is the highest under the red and blue combined light treatment[ 32]; the combination of red and blue light can promote the increase of VC content in cucumber fruit. The phenolic substances, flavonoids, anthocyanins and other substances contained in fruits and vegetables not only have an important impact on the color, flavor, and commercial value of fruits and vegetables, but also have natural antioxidant activity, which can effectively inhibit or eliminate free radicals in the human body.
Using LED blue light supplement light can significantly increase the anthocyanin content of eggplant skin by 73.6%, while using LED red light, red and blue combined light can increase the content of flavonoids and total phenols [22]; blue light can promote tomato in tomato fruits The accumulation of red pigments, flavonoids and anthocyanins. The combination of red and blue light promotes the production of anthocyanins to a certain extent, but inhibits the synthesis of flavonoids. Compared with white light treatment, red light treatment can significantly improve the growth of lettuce shoots. The content of anthocyanins, but the lowest anthocyanin content in the shoots of lettuce treated with blue light; the total phenol content of green leaf, purple leaf and red leaf lettuce under the treatment of white light, red-blue combined light and blue light, but in red light The treatments are the lowest values; supplementation of LED ultraviolet light or orange light can increase the content of phenolic compounds in lettuce leaves, and supplementation of green light can increase the content of anthocyanins. Therefore, the use of LEDs to supplement light is an effective way to regulate the nutritional quality of fruits and vegetables in facilities
People will use LED plant supplement light to supplement light for grapes, because grapes are a kind of light-loving plant, insufficient light in the greenhouse will affect their growth, so in order to avoid this problem, people will find ways to use LED plants to supplement light The light fills the grape with light and ensures its healthy growth. How to choose the LED plant supplement light for grapes?
If the light is insufficient, the vines will be slender, the flowers and fruits will fall seriously, the berries will not develop well, and the quality will be low, which will even affect the yield in the second year. Therefore, people use LED plant supplement light to ensure the growth, yield and quality of grapes. Plants absorb the most red and blue light in the sun during the growth process, and the utilization rate is the greatest. Moreover, the blue-violet light can promote the differentiation of flower buds of grapes, fruit coloring and improve the quality of berries. Therefore, it is the best choice when supplementing grapes with light. Red and blue led plant fill light.
There are many types of plant fill light, such as high pressure sodium lamp, HID lamp, LED fill light, but among the many fill light, laser plant fill light not only has red and blue light, but also does not generate too much heat, so it can only fill light. effect. In addition, the laser fill light has low power consumption and high light utilization rate, which has a good effect on the grape fill light.
The led plant supplement light is the sixth generation of LED plant growth supplement light. Yaorong Technology LED plant supplement light is a manufacturer specializing in the research of plant supplement light. It is very experienced in grape supplement light, and there are many cases, supplement light effect Not bad.
