What kind of environment is LED plant light most suitable for plant growth?
What kind of environment is LED plant light most suitable for plant growth? Now, Yaorong Technology will introduce it! The wavelength of the LED plant light is very suitable for the growth, flowering and fruiting of plants. General indoor plants and flowers will grow worse and worse with time. The main reason is the lack of light irradiation. Illumination by LED lights suitable for the required spectrum of plants can not only promote their growth, but also It can prolong the flowering period and improve the quality of the flowers.
Why can LED plant lights promote plant growth? In the process of plant growth and development, light has two functions. One is an indirect function, which is the aforementioned photosynthesis, and another direct function is the formation of light forms. The wavelength types of LED plant production lamps are rich, which coincides with the spectral range of plant photosynthesis and light morphology.
The spectrum has a narrow half-width and can be combined as required to obtain pure monochromatic light and compound spectrum, and can concentrate light of a specific wavelength to irradiate crops uniformly; not only can adjust the flowering and fruiting of crops, but also control the height and plant The nutrient composition; the system generates little heat and occupies a small space. It can be used in a system of multi-layer cultivation and three-dimensional combination to achieve low heat load and miniaturization of production space.
The external environment affects the growth and development of plants, of which light has the greatest impact. The characteristics of full-spectrum LED plant lights: rich wavelength types, just in line with the spectral range of plant photosynthesis and light morphology; the half-width of the spectral wave width is narrow, and pure monochromatic light and compound spectra can be combined as needed.
Why LED plant lights can promote plant growth
Plant growth light organic planting is a kind of production that does not use chemically synthesized fertilizers, pesticides, growth regulators, genetic engineering and ion radiation technology, but follows the laws of nature, and adopts agricultural and physical and biological methods. To fertilize the soil, prevent and control diseases and insect pests, so as to obtain a safer system of agricultural production of organisms and their products.
The effects of light on plants (function: foil and setting off the main scene) are mainly in two aspects: on the one hand, light is necessary for the photosynthesis of green plants; on the other hand, light regulates the entire growth and development of plants in order to better come. Adapt to the external environment. This reliance on light to control cell differentiation and changes in structure and function will eventually inherit the formation of tissues and organs, and become light morphogenesis.
In the case of insufficient sunlight, LED plant lights simulate the most favorable wavelength of sunlight for plant growth. There are two main spectral regions absorbed by plant chlorophyll, one is the red part of wavelength 620~660nm, and the other is wavelength 430 The blue part of ~450nm, and the absorption spectrum of lutein and carotene is the blue part of wavelength 400~500nm. Lutein and carotene absorb blue light and transfer energy to chlorophyll for photosynthesis. Therefore, the main spectral regions that can be utilized by photosynthesis are the red part with a wavelength of 620 to 660 nm and the blue part with a wavelength of 400 to 500 nm.
Applying this high-efficiency light source system to agricultural production such as greenhouses and greenhouses, on the one hand, it can solve the disadvantages of insufficient sunlight that causes the taste of tomatoes, cucumbers and other greenhouse vegetables to decrease, and on the other hand, it can also make winter greenhouses solanum fruits Vegetables will be put on the market before or after the Spring Festival in advance to achieve the purpose of off-season cultivation.
What kind of environment is LED plant light most suitable for plant growth?
When driving LED plant lights through a buck regulator, the LED often conducts the AC ripple current and DC current of the inductor according to the selected output filter arrangement. This will not only increase the RMS amplitude of the current in the LED, but also increase its power consumption. This can increase the junction temperature and have an important impact on the life of the LED.
When it is lower than the LED turn-on threshold (the turn-on voltage threshold of a white light LED is about 3.5V), the current passing through the LED is very small. Above this threshold, the current will increase exponentially in the form of a forward voltage. This allows the LED to be shaped as a voltage source with a series resistor, with a warning note: this model is only valid under a single working DC current. If the DC current in the LED changes, then the resistance of the model should also change immediately to reflect the new operating current. Under a large forward current, the power dissipation in the LED will cause the device to heat up, which will change the forward voltage drop and dynamic impedance. It is very important to fully consider the heat dissipation environment when determining the LED impedance.
Adjustable brightness requires a constant current to drive the LED plant light, and the current must be kept constant regardless of the input voltage. This is more challenging than simply connecting an incandescent bulb to a battery to power it.
