A Revolution of "Light"

In vegetable greenhouses in Shouguang, Shandong, lettuce leaves unfurl like jade under the interweaving red and blue light spectrum. Farmer Song Yiliang taps his phone, and a matrix of supplemental lights automatically activates—this is not a sci-fi scene, but the daily reality of applied rare-earth LED lighting technology. By precisely adjusting the ratio of red light (promoting growth) and blue light (increasing chlorophyll), the lettuce growth cycle has shortened from 35 days to 18 days, vitamin content has increased by 22%, and yield has surged by over 30%.

The "Light Recipe" Code for Zero Pesticides

In traditional cultivation, weak light and low temperatures easily induce downy mildew and gray mold, making pesticide spraying a reluctant necessity. Supplemental lighting technology breaks this cycle through a triple mechanism:

Temperature Synergy: Light operation raises greenhouse temperature by 2°C, boosting root vitality and significantly increasing plant disease resistance by 38%.

Environmental Control: Red light inhibits the activity of pathogen spores, reducing disease incidence by 80%.

Ecological Loop: Combined with air-source heat pumps regulating soil temperature, humidity inside the greenhouse decreases, cutting off the disease transmission chain.

"We don't use any pesticides at all now, and the testing pass rate is 100%," said Shouguang farmer Xing Daofu, holding up lettuce with flawless, spot-free leaves.

Technical Core: Rare-Earth's "Transmute Light into Gold"

The core breakthrough lies in the fusion of rare-earth light conversion materials and intelligent light control systems:

Rare-Earth Lamp Core: 30W power consumption achieves 50W luminous efficacy, increasing photoelectric conversion efficiency by 40%, with the spectrum precisely matching the lettuce photosynthetic peak.

AI Decision-Making: IoT sensors monitor light intensity in real-time, automatically triggering supplemental lighting programs on cloudy/rainy days, providing precise daily supplementation for 4-6 hours.

Low-Carbon & Energy Saving: Powered by off-peak electricity at night, the annual electricity cost per mu (approx. 0.067 hectares) is only ￥120, saving 60% compared to traditional sodium lamps.

From Lab to Field: The "Light Engine" for Rural Revitalization

Practice in Dayu County, Ganzhou, Jiangxi, confirms the technology's broad applicability. During the 2024 rainy season, local bases ensured a stable daily supply of 10 tons of vegetables using rare-earth LED supplemental lighting. Farmers calculated the benefits: income per mu increased by over ￥6,000, while equipment costs are recouped within two years. The deeper significance lies in industrial chain transformation—in Baotou, Inner Mongolia, supplemental lighting for melons has connected 3,000 farmers to a modern cultivation system, with winter melon prices reaching ￥35 per jin (approx. 0.5 kg) yet still in short supply.

Light, Never So Crucial

As lettuce in Shouguang, melons in Baotou, and peppers in Ganzhou thrive under supplemental lights, Chinese agriculture is undergoing a leap from "relying on the weather" to "using light as fertilizer." This beam illuminating the greenhouses is not only the energy source for crops but also the sharpest blade of technology on the path to rural revitalization.