Growers generally have two options when it comes to LED พืชสวน spectrums – "fอุล spectrum" or "กว้าง-สเปกตรัม", ที่ appears as white light; and "สเปกตรัมสีแดง/สีน้ำเงิน", which can appear as purple or pink light.
LED สเปกตรัมสีแดง/สีน้ำเงิน luminaires are often referred to as narrow band spectrum lights – because the wavelengths they emit are within a narrow band of light. LED luminaires that emit a "white" light are often referred to as "broad spectrum" or "full spectrum" แสงสว่างs because they รวม ba . กว้างๆnd ของสเปกตรัมแสง (คล้ายกับดวงอาทิตย์มากขึ้น) which renders a "white" light (ไทยere are no true white wavelengths).
It should be noted that essentially all "white" LEDs are blue LEDs that are coated in a phosphor that converts the blue light into longer wavelengths. The phosphor absorbs the blue light and re-emits some or most of the photons into green and red light. This coating reduces ที่ efficiency ของ LED ใน converting photons into usable PAR (photosynthetically active radiation) แสงสว่าง, but makes for a better work environment in sole source applications. The composition of the phosphor coating will help to determine the spectral quality of the white light emitted. To find the efficacy of your luminaire, you will need to divide the โฟตอนฟลักซ์สังเคราะห์แสง (PPF) of the โคมไฟ, โดย its input wattage. The resulting efficacy ค่าจะเป็น represented in μmol/J. The higher the number, the more efficient the luminaire is at converting electrical energy into photons of PAR.
Red/Blue LEDs
The "purple/pink" LED luminaires that many associate with horticultural lighติง, ใช้ varying combinations of red and blue นำs, and are recommended สำหรับ greenhouse growers who are already receiving the full spectrum of light from the sun. Since photosynthesis peaks in the red and blue wavelengths it makes this spectrum, not only the most efficient for plant growth, but also the most energy efficient. From this perspective, if you are already getting full spectrum sunlight from outdoors, it would make the most sense to put most of your energy into wavelengths that are most optimal for photosynthesis, and where you will see the biggest energy cost savings. This combination is more energy efficient than "white" or full spectrum LEDs because blue and ไฟ LED สีแดงมีประสิทธิภาพโฟตอนสูงสุดเมื่อเทียบกับสีอื่น i.e. they convert the highest amount of electricity in photons, so you are getting more growth from your plants per dollar spent.
So, why do we need a combination of red and blue to grow plants, why can't we use just blue or just red LEDs? While red is most efficient for photosynthesis, having only red light would result in poor growth such as very elongated stems, so blue is added to keep plants compact and a more typical shape. On the other hand, you can't grow plants under only blue light either, as their growth and development will be adversely affected. Researchers have found over the years, that having a combination high red light to a lower percentage of blue light has been shown to be เหมาะสมที่สุด for the production ของ พืชเรือนกระจก that are already receiving light from the sun. Since there ไม่ใช่ "ideal spectrum" for greenhouse พืชผล, most LED manufacturers offer a fixed ratio of red to blue that has been ถือว่า the most optimum for horticultural crop growth and production.
หากคุณเป็นผู้ปลูกเรือนกระจกที่ต้องการติดตั้งไฟ LED เราขอแนะนำ our HortiLED Top 2.0 สีแดง สีขาว (ปานกลาง สีฟ้า) spectrum. This LED spectrum has a softer pink สี, making it easier to work under and grade พืช, than purple light, and has a high efficacy rating of 3.3 μmol/J―ลดการใช้พลังงานได้มากถึง 40 เปอร์เซ็นต์เมื่อเทียบกับระบบ HPS แบบเดิม ชาวสวนพบว่ามันให้ผลงานที่ดีเยี่ยมlts―either as a standalone LED installation or in a hybrid application (HPS-LED combination)―across all stages of growth for พืชผลหลายชนิดรวมทั้งไม้เถา ไม้ประดับs; ใบ greens and cannabis.
เต็ม-Spectrum "White" LEDs
While in a greenhouse, the outdoor sunlight will balance out the "pink or purple" light emitted from LEDs, the same spectrum in a sole-source, ในร่ม application ให้ sp . ที่จำกัดectrum ของแสงเพื่อการเพาะปลูกและสามารถ unpleasant to work under. Therefore, many indoor growers have shifted away from สเปกตรัมแคบ LEDs, to "white" กว้าง spectrum LEDs.
Broad spectrum LEDs have a lower efficacy than red/blue LEDs due to conversion, energy, and optical losses within the phosphor conversion process. However, since in ในร่ม applications where the luminaires are the เพียงผู้เดียว source of light, bสเปคถนนtรัม LED luminaires are far better กว่าสีแดง/น้ำเงินตั้งแต่ they emit a wide range of wavelengths for your crop throughout the different growth stages. This is important because as we do more research, we are discovering that wavelengths such as green, which were previously thought of as not very useful, are proving to be important in photosynthesis and certain morphological responses. Additionally, many full broad คลื่นความถี่ luminaires can also emit energy in the far-red region, which can help promote stem extension and leaf expansion.
ในn environment with only red/blue light, workers will not be able to properly identify problems such as nutritional deficiency, โรค and pests. So broad spectrum light is not only more pleasing to the eye, but also makes it easier to work and assess plant health.
ดังนั้น ในขณะที่คุณสามารถใช้ไฟ LED สีแดง/สีน้ำเงินในแอปพลิเคชันแหล่งเดียว กับสุขภาพของมนุษย์และ plant scouting being affected, we highly recommend using a สเปกตรัมกว้าง LED. For growers in sole source applications, we offer a "daylight" spectrum option with the HortiLED อันดับ 2.0―ideal for growth of indoor crops such as cannabis and leafy greens.
