1. How to choose the type of lamp?
As far as the current development trend of supplementary light is concerned, as a new type of light source, LED has the characteristics of energy saving, environmental protection, long life, short response time, etc., and has obvious advantages in the field of agricultural supplementary light. Compared with traditional light sources, LEDs can adjust the spectrum and radiation intensity according to requirements; secondly, LEDs are cold light sources, which will not cause burns to crops if exposed to close distances. Is it enough to choose LED fill light directly? The answer is not necessarily. The climatic conditions of the geographical location of the landlord should be considered. If it is north and cold in winter, it is recommended to mix LED lights and high-pressure sodium lights to keep the greenhouse at a certain temperature. If you are in the warmer south, you can use the LED fill light alone.
2. The type of crop is the key influencing factor in the selection of lights
In 2017, the "Quantities and Units of Electromagnetic Radiation for Plants" issued by the American Society of Agriculture and Biological Engineering extended the spectrum that has an effect on plants to 280nm-800nm. The specifics are more complicated. In simple terms, the types of plants are different and the requirements are The wavelength of the light is different. For example, blue light can induce the accumulation of flavonoids and anthocyanins, so for tomato growers, increasing the proportion of blue light can promote the formation of lycopene and flavonoids in tomatoes and improve the quality of tomatoes.
3. The influence of photoperiod The photoperiod refers to the perception and response of organisms to the alternating length of the light period and the dark period in the day-night cycle.
To put it simply, some plants have to undergo a certain photoperiod to form flower buds. This is also the result of the adaptation of plants in different geographical locations to the climate environment, ensuring that plants can complete spring, summer, and autumn in the appropriate season. The life process of Shihe Dongzang. In addition, the flowering of many plants does not respond very strictly to the length of sunlight. They can also bloom after a period of time under unsuitable photoperiod conditions. Different varieties of the same plant may have different requirements for sunshine. The main way to artificially adjust the photoperiod of plants is to artificially supplement light to extend the light time, or artificially block natural light to make plants enter the dark phase in advance. So how long you take depends on the types of plants you plant. The photosynthesis required for plant growth is inseparable from light, but different wavelengths of light have obvious differences in plant growth. Red light and blue light can provide the most abundant nutrients for plant growth. Blue light-is conducive to the growth of plant stems and leaves. Red light-is conducive to the flowering and fruiting of plants. Different wavelengths have different effects on plant growth.
200-280nm strong ultraviolet light C-band has a serious adverse effect on plant growth.
280-315nm ultraviolet light B band, easy to cause plants to fade
315-380nm ultraviolet light A band, has no effect on plant growth
The 380-400nm visible light band begins, and the chlorophyll absorption process begins. UV protection lamps or plastics can effectively block light with wavelengths below 400nm.
400-520nm includes purple light, blue light and light green light. Chlorophyll strongly absorbs light in this band and promotes photosynthesis. The light in this band helps the stems and leaves of plants grow.
520-610nm includes green light, yellow light and orange light. Chlorophyll and other pigments such as carotenoids are poorly absorbed.
610-720nm red light band. Chlorophyll has the strongest absorption and greatly promotes photosynthesis. Light in this band helps plants to bloom and bear fruit.
720-1000nm near infrared band. Chlorophyll is basically not absorbed. Light in this band has some influence on flowering and budding.
Vertical farm lighting, an artificial supplementary lighting program set up in an environment where the planting area and natural light are restricted, has a strong application prospect especially in the effective use of urban environments to grow crops.
Greenhouse lighting and proper artificial lighting systems play a pivotal role in various modern greenhouses in horticultural production. By adjusting the light formula of different crops, factors such as crop appearance, growth cycle, nutrients and flavor substances are optimized.
Hangzhou ZGSM Technolgy Co,.LTD is also at the forefront of plant lighting. Each plant species has its own special lighting needs. We directly cooperate with growers and scientists to provide crop-based lighting formulas to improve the quality of plants. And the number is raised to a new height. At the same time, our global team of experts provides professional knowledge support in the fields of optics, electronics and optical sensors. From lighting products to intuitive user interfaces for intelligent control, ZGSM provides complete software solutions to optimize products and systems for plant growth.
