What is so special about modern agricultural techniques? Plant wavelengths And LED Grow Light
Writer：Jane Time：2018-06-20 Browse：104 Popular science about plant wavelengths
1.The color temperature and lumens of plant lamps are seen by the human eye, while the photosynthesis of plants to light is independent of the color temperature and lumens.
2. Influence of spectral range on plant physiology 280 ~ 315nm -- minimal influence on morphology and physiological processes 315 ~ 400nm -- less chlorophyll absorption, affecting photoperiod effect, preventing stem elongation 400 ~ 520nm(blue) -- maximum absorption ratio of chlorophyll and carotenoid. 520 ~ 610nm(green) -- Low absorption of pigment 610 ~ 720nm(red) -- Low absorption of chlorophyll, significantly affecting photosynthesis and photoperiod effect 720 ~ 1000nm -- Low absorption, stimulating cell elongation. It can be seen from the above data that different wavelengths of light have different effects on photosynthesis of plants. The wavelengths of light needed for photosynthesis of plants are around 400 ~ 720nm.
Light at 400 to 520nm(blue) and 610 to 720nm(red) contribute the most to photosynthesis. 520-610 nm(green) light is absorbed by plant pigments at a very low rate.
3. According to the above principles, plant lamps are made into a combination of red and blue, all blue and all red forms to provide light of two wavelengths, covering the wavelength range required for photosynthesis. On the visual effect, the plant lamp of red and blue combination appears pink.
And white LED lamps, the most common is to use a blue core, stimulate yellow phosphors, which compound to produce a visual white light effect. In the energy distribution, there are two peaks in the blue region at 445nm and the yellow-green region at 550nm. However, red light of 610 ~ 720nm, which is needed by plants, is very scarce. This explains why plants don't grow well when exposed to white LEDs.
4.plant lamp red and blue lamp chromatographic ratio is generally between 5:1 ~ 10:1 is appropriate, usually optional 7~ 9:1 ratio.
5.with the plant lamp to fill the light of the plant, the height of the general distance from the leaf is about 0.5 meters.
Application case: Experts from Agricultural University cultivated a batch of Holly seedlings through cloning technology, and searched for the most suitable "nutrient light" for the growth of plants according to their growth status under different colored light sources. Remember, in the purple light of the Holly seedlings, the tallest growing, but the leaves are small, the roots are shallow, a picture of malnutrition. Seedlings under the yellow light are not only stunted, but their leaves look lifeless. Holly plants that grow best under a mixture of red and blue light are not only strong, but also have strong roots. According to introduction, the red lamp bubble of this kind of light source and blue bulb are according to the scale configuration of 9:1. In addition to young Holly plants, the experts also tested light with Phalaenopsis orchid, Phalaenopsis orchid, strawberry and tomato. It turns out that a 9:1 ratio of red and blue light is the most beneficial for plant growth.
As the blue is conducive to the growth of plant leaves, and the red is conducive to the flowering and fruit of plants, so the number of red and blue lamp bead configuration of the lamp can be made in accordance with the requirements of the user's plants for light.
Light and plant light affect plant has four forms: light quality, photoperiod and light intensity and light quantity, plant growth and yield (the plant size, the number of flowers, and other characteristics) mainly accept the influence of the amount of light in the day, plants form (height and plant type), mainly related to light quality (mainly blue light, red light,). The flowering of photoperiod sensitive plants (short-day and long-day plants) is mainly affected by the duration or photoperiod of light, while that of photoperiod insensitive plants (neutral plants) is most affected by the amount of light, and photosynthesis is mainly affected by the amount and intensity of light. Photosynthesis occurs mainly in the visible spectrum, (400-700nm)
In the red light area and blue light area of the strongest photosynthesis LED plant growth lamp according to the growth mechanism of plant photosynthesis selectivity, using LED as a light source, according to the scientific RB ratio for color mixing, artificial synthesis of plant growth necessary light, pure spectrum, spectrum focus in 450-470, 615-625. Compared with ordinary plant lamp advantages, ordinary plant lamp will emit useless ultraviolet light and infrared light for plant growth, waste a lot of electricity, and LED plant growth lamp using electroluminescence mechanism, under the same light intensity conditions, LED plant growth lamp than ordinary plant growth lamp energy-saving more than 80%.
The life of ordinary plant lamp is generally only 1000-5000 hours, and the life of LED plant lamp can reach 100000 hours, long effect, energy saving, high light energy rate, does not produce ineffective light for plant growth, is the real sense of the promotion of plant growth of professional lamps and lanterns products!
A hydroponic plant
Integrated modern agricultural achievements of the balcony agricultural technology
The 21 st century is a century that the balcony agriculture science and technology explodes to develop greatly, in this great era, each domain is producing the change of ever-changing, it is the corner of the balcony of inremarkable or one corner of the roof of the building, also producing change, and it is profound qualitative change. Originally bare steel mix mud floor. Now you can put on the green, originally lifeless and even smoking the roof now summer can bring cool department of filar silk cool idea, originally cluttered and disorder of the roof of the balcony afforest, become orderly and specially designed for scientific systems engineering, it become more professional, become more popular, more simple, This combines the result with respect to modern science and technology and balcony agriculture and product.
On the balcony afforest you can integrate all the high-tech agriculture, the epitome of the balcony is no longer the traditional farming but the integration of agricultural high-tech, because it is important to people's lives, thirst for human environment beautification has played a very important role, is no longer a green onion, garlic green vegetables, a basin of a pot a wooden box, but through scientific planning and design; And is no longer morning and evening watering to protect live seedlings, weeds and soil to promote growth, fertilization and medicine busy group of management mode, but with modern computer intelligent technology to achieve the fool's operation, everything becomes simple, as long as you plant seedlings waiting for appreciation and harvest.
Is the busiest workaholic, you can also manage the balcony agriculture, is the area again big you do not have to be most of the energy, it is you really are leisure and adjust the mood and a good space to find the feeling of returning to nature, but also the importance of urban vegetable basket project, the output of it is agriculture soil tillage balcony several times, even ten times, Its quality than soil cultivation taste more tender sweet crisp, is the real production of pollution-free vegetables a micro base, if scientific cultivation of about 2-5 square meters of cultivation area can be available for your three family of fruits and vegetables need. So what advantages does this kind of new-style balcony agriculture technology have and integrated what modern high technology and make it have charm alone, become a beautiful scenery that the city builds?