The growth of plants is inseparable from light, light is like the “food” of plants, provides energy for photosynthesis, and is a key factor in plant growth and development. In the natural environment, the sun is the main source of light for plants, however, not all plants can get enough sunlight. For example, in indoor planting, greenhouse cultivation, or in the case of long rainy weather, lack of light often limits the normal growth of plants. At this time, the plant lamp is like the “light” companion of the plant, playing an indispensable role. It can supplement the specific spectrum and intensity of light for plants to meet the needs of plant photosynthesis, so as to promote plant growth, flowering and fruit, so that plants can thrive in the absence of natural sunlight.
Types and characteristics of plant lamps
Among the many types of plant lights, LED plant lights, fluorescent lights and HID lights are more common.
LED plant lights are the rapidly developing plant fill light lamps in recent years, with significant advantages. It is energy efficient, environmentally friendly and has a long life, and can flexibly adjust the spectrum according to the needs of plant growth, providing customized lighting solutions. For example, through precise control of the spectrum combination, it can meet the special needs of different plants in various growth stages, such as promoting the color of succulent plants, preventing the growth of plants, helping flowers with bright colors and robust growth, increasing the yield of vegetables, advancing the market and improving the quality. Its low heat, good heat dissipation performance, belongs to the cold light source, can irradiate plants at close range without worrying about burns, but also save planting space, lamps are rich and diverse, can adapt to different application scenarios. However, some of the non-professional design of the full spectrum LED lamp beads distribution is not uniform, in a small area of close irradiation may appear unbalanced spectral distribution.
Fluorescent lamps are used earlier in the plant fill light lamps, high light efficiency, better color rendering, can provide uniform light for plants, suitable for close irradiation. However, it also has some shortcomings, such as the traditional fluorescent lamp energy consumption is relatively large, some fluorescent lamps contain heavy metal solid mercury, easy to cause secondary pollution to the environment, and some fluorescent lamps lack the red light spectrum required by plants, and are mostly used for plant seedlings.
HID lamp contains high-pressure sodium lamp, etc., is an efficient gas discharge lamp, high light efficiency, long irradiation distance, suitable for large plants or outdoor plants fill light. However, it also has obvious disadvantages, such as large heat, the need to be equipped with a good cooling device, close irradiation is easy to burn plants; Poor lighting persistence, containing toxic metal mercury, low safety; Its spectral range is relatively fixed, unlike LED lights, which can flexibly adjust the spectrum to accurately match the needs of plants; And high energy consumption, the use of relatively expensive.
Pick the key elements of plant lights
(1) Spectral type
Different plants have different requirements for spectra at different stages of growth. In the seed germination stage of plants, blue light can promote germination and root growth, so more blue light is needed. In the seedling stage, blue light can help the upright growth and chlorophyll synthesis of plants, which is very important for their growth. In vegetative growth stage, plants need a balanced ratio of red and blue light to ensure healthy growth. At the flowering stage, the spectrum with a higher proportion of red light can effectively promote flower bud formation and fruit development. For example, when fruit plants such as strawberries bloom and bear fruit, increasing red light exposure can significantly improve fruit quality and yield. Therefore, when choosing a plant lamp, it is necessary to fully consider the type of plant and its growth stage, and select the matching spectral type to meet the specific lighting needs of the plant and promote its robust growth.
(2) Light intensity and coverage area
Light intensity and coverage area are important considerations in selecting plant lamps. The unit of light intensity is usually Lux or photosynthetic photon flux density (PPFD), which has a direct effect on plant photosynthesis. Generally speaking, the light intensity suitable for plant photosynthesis is between 10,000-30,000 lux, but different plants have different requirements for light intensity. For example, fruit and vegetable vegetables tend to require higher light intensity to grow well, while root and leafy plants have relatively low requirements. When determining the light intensity, it is necessary to make a comprehensive judgment based on the type of plant planted and its growth stage. At the same time, it is also necessary to consider the coverage area of the plant lamp to ensure that the light can evenly cover the entire planting area to avoid light dead corners, so that each plant can receive sufficient and appropriate light to achieve healthy and balanced growth of the plant.
(3) Durability of lamps
The durability of lamps is directly related to its long-term use cost and performance stability. High-quality plant lamps usually choose metal materials with good heat dissipation performance in terms of material, such as aluminum alloy, etc. These materials can effectively distribute the heat generated during the work of the lamp, avoid damage to the internal components of the lamp due to overheating, thereby extending the service life of the lamp. Good heat dissipation design can also reduce the phenomenon of light decay caused by high temperature, and ensure that the plant lamp can maintain stable light intensity and spectral characteristics during long-term use. In addition, the shell material of the lamp should also have a certain anti-aging and corrosion resistance to adapt to different planting environments. When choosing a plant lamp, we should pay attention to the structural design of the product and the material description used, and evaluate the durability of the lamp by understanding its heat dissipation principle and material characteristics, so as to provide reliable guarantee for long-term stable plant light filling operation.
(4) Energy saving performance
In today’s era of environmental protection and energy saving, the energy-saving performance of plant lamps is becoming more and more important. Different types of plant lights have significant differences in energy consumption, for example, LED plant lights have lower energy consumption and significant energy saving effect than traditional fluorescent lamps and HID lamps. The energy efficiency ratio of LED plant lights can be as high as more than 90%, which can save more than 60% energy compared with traditional lighting equipment. This is because LED lights use advanced luminescence technology to convert electrical energy into light energy more efficiently, reducing the loss of energy in the conversion process. With the same lighting effect, for example, the power consumption of LED plant lights is only about a quarter of that of traditional HID lights. Choosing plant lamps with good energy saving performance can not only reduce long-term use costs, but also contribute to energy conservation and emission reduction, which is in line with the concept of sustainable development. In the selection of plant lamps, you can view the energy consumption identification or related technical parameters of the product, understand its energy efficiency ratio, power consumption and other information, in order to choose energy-saving and environmentally friendly products, while meeting the needs of plant light, to achieve efficient use of energy.
Plant lamp selection strategies for different plants
(1) Leafy vegetable plants
Leafy plants usually have a clear preference for blue light. Blue light plays an important role in the growth process of leafy vegetables, which can effectively promote the growth and development of leaves, make the leaves more thick and green, and help to increase the chlorophyll content in the leaves, thereby improving the efficiency of photosynthesis. When choosing a plant lamp suitable for leafy vegetables, attention should be paid to the proportion of blue light in its spectrum. For example, some plant lamps designed for leaf vegetables, the proportion of blue light can reach 40%-50%, such a spectral combination can provide a suitable light environment for leaf vegetables, promote their growth, so that you can easily grow tender and delicious leaf vegetables at home.
(2) Fruit plants
Fruit plants have special requirements for red light during their growth. Red light is very important for the flowering and fruit of fruit plants, which can significantly promote flower bud differentiation and increase fruit setting rate, thus improving fruit quality and yield. Studies have shown that increased red light exposure during the fruit’s development stage can make the fruit fuller and more colorful, and the content of nutrients such as sugar and vitamins will be correspondingly increased. Therefore, when selecting plant lamps for fruit plants, it is necessary to preferentially choose products with a higher red light ratio, in general, the red light ratio of such plant lamps can be between 60%-70%, providing a strong guarantee for the harvest of fruit plants.
(3) flowers and plants
Floral plants have special requirements for more complex spectra at different growth stages. In vegetative growth stage, flowers need a balanced ratio of red and blue light to ensure the healthy growth of plants, so that the stems are strong and the leaves are luxuriant. At the stage of flower bud differentiation and flowering, the demand for red light will increase, and a higher proportion of red light will help the formation and development of flower buds, prompting flowers to bloom into colorful flowers. For example, increased red light exposure time and intensity during the flower bud differentiation phase of roses can make their flowers larger and more colorful. Plant lights for flower plants usually have an adjustable spectrum function, and users can adjust the ratio of red and blue light according to the growth stage of flowers to meet the lighting needs of different periods, so that flowers can get the best light care in each growth stage and show a charming posture.
Brand and price considerations
(A) Well-known plant lamp brand recommendation
In the plant lamp market, there are many well-known brands to choose from. For example, Opal lighting as a well-known lighting company, its plant light products use advanced LED technology, with the advantages of energy saving, spectrum adjustment, etc., to meet the growth needs of a variety of plants, and product quality is reliable, perfect after-sales service. The brand also has a high reputation in the field of LED lighting, and its plant lamps are known for high brightness, accurate spectrum and good heat dissipation performance, which can effectively promote plant photosynthesis and is suitable for professional growers. There is also Poyu, focusing on the research and development of plant fill light, has a unique full spectrum of patented technology, can provide similar sunlight lighting effect, has a significant effect on plant growth, in flowers, succulent plant planting enthusiasts have a good reputation. These brands, with their high-quality products and good reputation, have occupied a place in the market and become a reliable choice for consumers when purchasing plant lights.
(2) Cost-performance analysis
When choosing a plant lamp, cost performance is an important consideration. Different brands and models of plant lights may have large differences in price, so you need to consider their performance and price in order to find the most suitable product for you. Generally speaking, the higher price of plant lamps may be more advantageous in terms of spectral accuracy, light intensity uniformity, heat dissipation performance and material quality, but this does not mean that the low price of products must not meet the demand. Some low-end price plant lights can also provide basic lighting functions, suitable for small family planting or lighting requirements are not particularly strict plants. When choosing, you can select according to your planting scale, plant type and budget. For example, for ordinary family indoor planting of some leafy vegetables or flower plants, choose the price of about 100-300 yuan LED plant lights, its spectrum and light intensity can usually meet the needs of plant growth; For professional plant growers or large greenhouse planting, it may be necessary to invest in high-end plant lamps with a price of more than 500 yuan to ensure that plants can get the best light conditions at various growth stages, so as to obtain higher yields and quality. At the same time, you can also refer to the evaluation and professional evaluation of other users to understand the performance of the product in actual use, in order to make a more intelligent purchase decision, under the premise of ensuring the quality of the plant lamp, choose a reasonable price product to maximize the cost performance.
Precautions for installation and use
(A) installation height and Angle
The installation height and Angle of the plant light have a crucial impact on the lighting effect. Installation height is directly related to light intensity and coverage. Generally speaking, the higher the installation height, the larger the range of light coverage, but the light intensity will be weakened accordingly; On the contrary, the lower the installation height, the greater the light intensity and the smaller the coverage. For example, in a large-area planting scenario, it may be necessary to install the plant light at a higher position in order to achieve uniform light coverage, but at the same time ensure that the light intensity still meets the needs of the plant. In the actual installation, it is necessary to determine the height according to the power of the plant lamp, the plant type and its growth stage. In the seedling stage of the plant, due to its relatively low demand for light intensity, the installation height can be appropriately increased; In the rapid growth period or flowering and fruiting period of the plant, the light intensity is higher, so the installation height should be properly reduced.
The installation Angle of the lamp can not be ignored. Different installation angles will cause differences in the distribution of light on the surface of the plant, which will affect the efficiency of plant photosynthesis. Usually, the plant lamp is installed directly above the plant, so that the light can shine vertically on the plant, so that the plant leaves receive more uniform light, reduce the shadow area, and promote the balance of photosynthesis. However, in some cases, the installation Angle may also be adjusted to meet special planting layout or lighting needs. For example, in planting areas near walls or corners, plant lights can be tilted appropriately to ensure that the light can adequately cover each plant. By reasonably adjusting the installation height and Angle of the plant lamp, it can provide the best lighting conditions for the plant and promote its healthy growth.
(2) Lighting time Settings
Different plants have different requirements for light time, which is determined by the biological characteristics of plants. Long day plants, such as spinach, beets, etc., usually need 14-16 hours of light per day to grow and develop properly. In the longer light time, they can better photosynthesis, accumulate nutrients, and promote the growth of plants and flowering and fruit. In contrast, short-day plants, such as chrysanthemums and begonias, generally only need 10-12 hours of light or less. In the environment of shorter light time and longer dark period, such plants will trigger their flowering mechanism and enter the reproductive growth stage smoothly.
In order to meet the specific needs of different plants for light time, setting timers is a convenient and effective method. The timer can accurately simulate the natural sunshine cycle, automatically turning on and off the plant light according to the preset time, ensuring that the plant gets the light at the right time. When setting the timer, it is first necessary to fully understand the characteristics of the light demand of the planted plant, to clarify whether it is a long-day plant or a short-day plant, and to change the requirements of the light time in different growth stages. For example, for some plants that need longer light time in the early growth period and need to shorten the light time appropriately in the flower bud differentiation period, the timer setting needs to be adjusted in time according to its growth process. In addition, the local natural light conditions and seasonal changes should be considered. In the summer when the natural light time is longer, it may be necessary to reduce the supplementary light time of plant lamps; In winter, when natural light is insufficient, it may be necessary to extend the light time appropriately to ensure the normal growth of plants. Through reasonable setting of timer, to provide stable and appropriate light time for plants, help plants to establish a good growth rhythm, improve growth efficiency and quality, to achieve healthy and robust growth.
(3) Regular cleaning and maintenance
Regular cleaning of plant lamps is very important to maintain its good lighting performance. Over time, the surface of the plant lamp will gradually accumulate impurities such as dust and dirt, which will have a negative impact on the transmittance of light, resulting in a reduction in light intensity, thus affecting the efficiency of plant photosynthesis. For example, a thin layer of dust may reduce light intensity by 10-20%, or even more in severe cases. Therefore, in order to ensure that the plant lamp can continue to provide sufficient and stable light for the plant, regular cleaning is an essential link.
When cleaning plant lamps, it is necessary to use the right methods and tools to avoid damage to the lamps. First, plant lights should be turned off and unplugged to ensure safe cleaning operations. For the dust on the surface of the lamp, you can use a soft, dry rag to gently wipe and remove the dust. If the dust is more stubborn, you can use a small amount of water to wet the rag and then wipe it, but pay attention to avoid water entering the interior of the lamp, so as not to cause short circuit and other faults. For some dirt that is difficult to wipe clean, you can use a mild detergent, but you need to try it on the inconspicuous part of the lamp first to confirm that there is no adverse reaction before a comprehensive cleaning. In the cleaning process, special attention should be paid to protecting the lens part of the lamp, because the cleanliness of the lens directly affects the uniformity and intensity of the light. Special optical lens cleaning paper or a soft brush can be used to gently clean the dust and dirt on the surface of the lens to ensure that the lens has good light transmission.
In addition to regular cleaning, it is also necessary to maintain the plant lamp to extend its service life. It is necessary to regularly check whether the connection part of the lamp is loose, and if it is loose, it should be tightened in time to ensure that the circuit connection is safe and reliable. At the same time, check whether the cooling parts of the lamps are working normally, such as whether the cooling fan is running smoothly, and whether the heat sink has dust. If the heat dissipation is poor, it will cause the lamp temperature to be too high, which will not only affect the performance and life of the lamp, but also may cause safety problems. In addition, we should also pay attention to the luminescence of the lamp, observe whether the lamp is damaged or the phenomenon of uneven light, if there is a problem, the lamp should be replaced in time or repaired. Through regular cleaning and careful maintenance, the plant lamp can always maintain a good working condition, provide stable and efficient light support for the growth of plants, and let the plants thrive in a suitable light environment.
Sum up
When choosing a plant lamp, it is necessary to integrate many factors. It is necessary to determine the spectral type according to the plant type and growth stage, determine the light intensity and coverage area according to the planting space and plant needs, determine the durability through the lamp material and heat dissipation design, and refer to the energy consumption label to understand the energy-saving performance. At the same time, consider the brand reputation, cost performance, as well as correct installation, reasonable setting of light time and regular cleaning and maintenance. Only in this way can we choose the right “light” partner for the plant, so that they can grow healthily and bloom in different environments.