What Is Horticultural Lighting?
Horticultural lighting can also be understood as plant lighting because most horticultural-related products are related to plants.
A plant lamp is an artificial light source that meets the lighting conditions required by plant photosynthesis.
In the absence of sunlight, this kind of lamp can act as sunlight to enable plants to grow normally or better.
This lamp has the functions of root fixing, promoting and regulating flowering period and flower color, promoting fruit ripening and coloring, and improving taste and quality.
The light environment is one of the important physical environmental factors for plant growth and development.
Controlling plant morphogenesis through light quality regulation is a significant technology in protected cultivation areas.
The plant growth lamp is more environmentally friendly and energy-saving.
The LED plant lamp provides photosynthesis for plants. It Promotes plant growth, shortens the time for plants to bloom and bear fruit, and improves production.
In the modernization drive, it is an indispensable product for crops.
The led grow light helps to shorten the growth cycle of plants.
Because the light source of light is mainly composed of red and blue light sources.
Use the most sensitive light band in the plant.
The red light wavelength is 620-630nm and 640-660nm, and the blue light wavelength is 450-460nm and 460-470nm.
These light sources are designed to enable plants to produce the best photosynthesis and obtain the best growth state.
Experiments and practical applications show that in addition to supplementing light for plants in the light deficit time.
They also enable plants to promote the differentiation of multiple lateral branches and buds and accelerate the growth of roots, stems, and leaves. Accelerate the synthesis of plant carbohydrates and vitamins, and shorten the growth cycle.
With the rapid increase in global demand for organic food, it is an opportunity for more and more producers to develop organic farming.
Why Switching On Horticultural Lighting Market?
In the past ten years, the world’s horticultural area has developed rapidly, and the light environment control lighting technology for plant growth has attracted attention.
Facility gardening lighting technology is mainly applied in two aspects:
- It can be used as supplementary illumination for plant photosynthesis when the sunshine amount is small or the sunshine time is short;
- As the induced illumination of plant photo-period and light morphogenesis.
1. Study On LED As Supplementary Illumination For Plant Photosynthesis
The traditional artificial light source generates too much heat.
For example, if using LED auxiliary lighting and hydroponic systems. Air can be recycled, remove excess heat and moisture, and electrical energy can be efficiently converted into efficient photosynthetic radiation and ultimately into plant matter.
The results showed that the growth rate and photosynthetic rate of lettuce were increased by more than 20% with LED illumination, and it was feasible to use led in the plant factory.
The study found that the mixed-wavelength LED light source can significantly promote the growth of spinach, radish, and lettuce and improve the morphological index compared with the fluorescent light source.
It can make the beet bio-accumulation maximum. The best element accumulation is the most significant and produces the highest sugar and starch accumulation in the root.
Compared with the metal halide lamp, the anatomical morphology of the stems and leaves of pepper and perilla plants grown under the wavelength LED changed significantly, and the photosynthetic rate of the plants increased with the increase of optical density. Complex wavelength LED can cause the stomatal number of marigold and sage to increase.
2. LED As Induction Lighting For Plant Photoperiod And Light Morphogenesis
Specific wavelength LEDs can affect the flowering time, quality, and flower duration time.
Some wavelengths of LEDs can increase the number of flower buds and flowers in plants.
Some wavelengths of LEDs can reduce the flower formation reaction, and regulate the length and flowering period of the pedicel, which is conducive to the production and marketing of cut flowers.
Plants’ flowering and subsequent growth can be concocted by LED modulation to regulate the production cycle.
3. Research On The LED Application In Aerospace Ecological Life Support System
Establishing a controlled ecological life support system is the fundamental way to solve the problem of long-term life support in manned spaceflight.
Cultivation of higher plants is a crucial part of CELSS, and one of the keys is lighting.
Based on the particular requirements of the space environment.
The light source used in the cultivation of space higher plants must have the characteristics of high luminous efficiency, output light waves suitable for plant photosynthesis and morphogenesis, small size, lightweight, long life, high safety and reliability records, and no environmental pollution.
Compared with other light sources such as cool white fluorescent lamps, high-pressure sodium lamps, and metal halide lamps, LEDs can convert light energy into more efficient photosynthetically active radiation.
In addition, it has the characteristics of long life, small volume, lightweight, and solid-state, so it has been paid more attention in the ground and space plant cultivation in recent years.
Studies have shown that LED lighting systems can provide lighting with uniform spectral energy distribution and are 520 times more efficient than metal halide lamps in converting electrical energy into the light needed by plants.
Conclusion: especially against the background of the rising concern of global energy shortage, LED light source has the characteristics of high luminous efficiency, long service life, safety and reliability, environmental protection, and energy saving, which makes the prospect of LED in the lighting market attract more global attention.
Generously applied research results of LED in plant-protected cultivation environments show that led can solve these problems, especially suitable for artificial light-controlled plant-protected cultivation environments.
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