The important role of LED plant lights
Cannabis is a light crop. Therefore, supplementing light during planting plays an important role
The impact of sunlight on cannabis includes two aspects: one is the total amount of light exposure the cannabis receives during the growth cycle, and the other is the amount of sunlight received every day. The amount of sunlight exposure has a greater impact on the dry weight of hemp than the total exposure, but the total exposure has a greater impact on the fiber quality (the strength of the nascent fiber). During seed retention or oil cultivation, strong light is conducive to the germination of hemp plant axillary buds and the development of inflorescence, thereby increasing seed yield. Need to use Beijing Demeter high-pressure sodium lamp or LED supplementary light, when harvesting hemp cultivation, weak light can inhibit the germination of axillary buds and reduce the growth of branches into the top, which is conducive to improving fiber yield and quality. With sufficient sunlight, the above ground and underground parts grow well, and the dry weight and yield increase. But the sunlight is too strong, the fiber development is slow, and it is hard. Therefore, in terms of fiber quality, cloudy and cloudy weather with weak light is appropriate. Cannabis is a short-day crop. Shortening the daylight can promote flowering, but the plant is short and the fiber yield is low; prolonging the daylight can delay flowering, and prolonging the daylight can delay flowering. Due to the prolonged vegetative growth period, the plant grows taller and the fiber yield is high. . There are also varieties that bloom under long-day conditions
Cannabis seeds can germinate when the soil temperature is above 1℃, but the seedlings should emerge neatly. Generally, it is better to sow when the soil temperature is above 8-10℃. The optimum temperature for the germination of hemp seeds is 25-35°C, and the highest temperature does not exceed 45°C. If the temperature is high, the germination will be fast and uniform.
Cannabis seedlings can tolerate a short-term low temperature of -5, but it will seriously affect its growth process. Suitable temperature for growth, 10-15℃ for seedling period; 18-30℃ for rapid growth period, 19-25℃ is the most suitable, 18-20℃ for flowering to seed maturity, low temperature of -1℃ during flowering period, flower organ damage , Below -2℃, the floral organs die, especially the male flowers die.
Seeds can withstand low temperatures of 3-5°C and lower temperatures within 10-15 days after germination, and growth will be delayed at a low temperature of -5°C. Cannabis is not tolerant to low temperature during the flowering period, and it is easy to die when it encounters minus low temperature during the flowering period, especially the death of male plants.
During the growth period, the average temperature of day and night has a great influence on the growth of cannabis, especially from budding to the end of flowering, the stems grow fastest, and the dry matter increases in a large amount. During this period, the optimal temperature should be kept at 16 (night) -25°C (daytime)
For all kinds of crops in greenhouses, due to the short sunshine time in winter and the weather such as overcast, rain, snow, and fog, the crops will suffer from severe lack of light; the southern greenhouse crops will also suffer from lack of light in the rainy and plum rainy climates, resulting in Crops cannot photosynthesize normally. Demeter plant supplement light can supplement light scientifically and reasonably. Demeter high pressure sodium lamp is suitable for all stages of cannabis growth. It can make plants full of leaves, developed roots, good growth, and enhance resistance and immunity. , Promote early maturity, increase production, and improve the quality of hemp. It can also inhibit the growth and reproduction of germs and eggs in the shed, reduce the amount of pesticides, and reduce the pollution to the environment and crops, which is in line with the current "green" trend. After being irradiated by the Demeter plant supplement light lamp, hemp will grow well, the accumulation of CBD and various medical nutrients will increase significantly, and there will be no phenomena such as excessive growth. Demeter cannabis supplement light is continuously irradiated for 12-16 hours every day. The cannabis grown under such a light source will have better nutrient accumulation, overall morphological performance, aromaticity and other indicators than ordinary cannabis grown in a greenhouse environment. Has economic value
Led hemp supplement light is a kind of supplement light. According to the law of plant growth, it must need sunlight, and the supplement light uses the principle of sunlight. The light replaces the sunlight to provide a better growth environment for plants. A kind of lamps.
The light environment is one of the indispensable and important physical environmental factors in the growth and development of plants. Through the regulation of light quality, the control of the establishment of plant morphology is an important technical achievement in the field of facility cultivation. LED plant lights provide photosynthesis to plants, can promote plant growth, shorten the time it takes for plants to bloom and bear fruit, and improve crop production! In modernization, it is an indispensable product for crops
1. Principle of LED cannabis fill light:
Light environment is one of the important physical environmental factors that are indispensable for plant growth and development. Controlling plant morphology through light quality regulation is an important technology in the field of facility cultivation.
According to the light required for plant photosynthesis, we basically make plant lights in three forms: red and blue, full blue, and full red, covering the wavelength range required for plant photosynthesis. In terms of visual effects, the plant light with a combination of red and blue appears pink. Red light promotes plant germination and flowering, and blue light promotes plant growth. You can choose a more suitable plant wavelength and color ratio to promote plant growth.
The chromatogram ratio of red and blue LED lights is generally between 5:1 and 10:1, and the ratio of 7 to 8:1 is usually available. Of course, if conditions permit, the ratio of red light to blue light can be adjusted according to the cycle of plant growth.
2. LED fill light application range
Plant tissue culture, vegetable and fruit planting, facility horticulture and factory seedling breeding, and aerospace ecological life support system, etc.
3. LED fill light product features
The wavelength types are abundant, which coincides with the spectral range of plant photosynthesis and light morphology; the spectral wave width is narrow at half-width, and can be combined as needed to obtain pure monochromatic light and composite spectrum;
It can concentrate light of specific wavelength to irradiate crops in a balanced manner;
It can not only regulate the flowering and fruiting of crops, but also control the height of the plant and the nutrient composition of the plant;
The system generates less heat and occupies a small space. It can be used in a multi-layer cultivation three-dimensional phase combination system, which reduces the heat load and miniaturizes the production space;
High luminous efficiency: 90% of the emitted light can be absorbed by plants, while traditional high-pressure sodium lamps and metal halide lamps have only 8-10% luminous efficiency;
The light decay is very small, and the life span is more than 50,000 hours; the extremely strong durability will also reduce the operating cost.
