Plant growth lamp

Abstract

The invention is applicable to the technical field of illumination devices, and provides a plant growth lamp comprising a casing and a light source plate disposed in the casing. The light source plateincludes a plurality of quasi-natural light LED light sources, and each quasi-natural light LED light source emits quasi-natural light. In the quasi-natural light, the relative spectral power of redlight is greater than 0.60, the relative spectral power of cyan light is greater than 0.30, the relative spectral power of blue light is less than 0.75, the ratio B / R of the optical radiation power ofthe blue light to the red light is 0.15-0.43, and the ratio R / FR of the optical radiation power of the red light R with the wavelength of 650-670 nm to the red light with the wavelength of 720-740 nmis 4 to 12. According to the plant growth lamp, the quasi-natural light LED light sources are used to illuminate plants, the illumination spectrum is complete, a humanized working environment is provided, which is favorable for operation of workers in a planting environment; by the optimization of the ratio of the optical radiation power of the blue light to the red light, and the optimization ofthe ratio of optical radiation power of the red light with the wavelength of 650-670 nm to the red light with the wavelength of 720-740 nm, a plant morphology is controlled, and the development of plant comprehensive nutrition is promoted.

Description

technical field [0001] The invention belongs to the technical field of lighting devices, in particular to a plant growth lamp. Background technique [0002] Sunlight is one of the necessary conditions for plant growth and development. However, the sun cannot provide sunlight 24 hours a day without interruption. Therefore, there have been plant growth lights that simulate the sunlight required by plants to supplement light for plants. Chlorophyll is the main body of plants for photosynthesis. In the red light region with a wavelength of 640-660nm, chlorophyll a has a strong absorption peak, and chlorophyll b has a strong absorption peak in the blue light region of 430-450nm. The red spectrum is the energy source of photosynthesis. Red light promotes the growth of plant stems, and blue light can promote the opening of stomata, which helps external carbon dioxide enter cells and promote plant leaf growth. Therefore, the lighting spectrum of plant growth lamps currently on the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a plant growth lamp, which aims to solve the technical problem that the light color of the plant lighting spectrum in the prior art is not conducive to the operation of people in the planting environment and is not conducive to the overall nutritional content of plants

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