Light source for indoor cultivation of plants

Abstract

The invention relates to the technical field of plant cultivation by artificial light, particularly provides a light environment method for full-artificial light cultivation of plants in order to provide a full-artificial light source for plant growth. The light source herein includes light wave 620-760 nm in frequency; the light wave 620-760 nm in frequency accounts for 64-76% of the whole photonquantity of the light source. Compared with traditional light sources, such as existing fluorescent lamps and high-voltage sodium lamps, the light source proportion and the light source combination mode employed herein help greatly increase the yield of plants. Compared with traditional LED light proportion schemes, the light source proportion herein has the advantages that the selected light frequency is more accurate, influence from other plant growth parameters is little, better specificity is imparted to the promotion of plant growth process, and the precise light wave frequency, peak wavelength and photon ratio precise combination and proportioning allow the plant growth effect to be controlled more precisely, so that plant growth is promoted.

Description

technical field [0001] The invention relates to the technical field of artificial light cultivation plants, in particular to a light source for all artificial light cultivation plants. Background technique [0002] Light is the basic environmental factor for plant growth and development. It is not only the basic energy source for photosynthesis, but also an important regulator of plant growth and development. It plays an important role in its morphological establishment, reproductive development, and regulation of secondary metabolites. Influence of lighting method. Traditional cognition: the growth of all things depends on the sun. On the earth, the sun is the main source of visible (ie light) and invisible electromagnetic radiation, and is the main factor to maintain the existence of life. The net daily average solar energy reaching the earth is about 28×10^23J (ie 265EBtu). This value is 5,500 times the world's annual primary energy consumption of 479 Pbtu estimated in...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the spectral design of fluorescent lamps and high-pressure sodium lamps, the achievable spectral energy distribution is limited, and the spectral quality is not optimal for promoting photosynthesis and photomorphogenesis, resulting in excessive growth of leaves and stems.

This is attributed to the unbalanced spectral emission associated with the absorption peaks of important photosynthetic pigments such as chlorophyll a, chlorophyll b, and beta-carotene; moreover, due to the different light environment requirements of different species of plants, it will lead to differences in efficient transformation. The energy efficiency is extremely low and the energy is wasted greatly, which leads to the increase of the operating cost of artificial light indoor cultivation plants

[0004] Therefore, based on the above reasons, light-emitting diodes (LEDs) and related solid-state lighting (SSL) are potentially feasible and promising tools for plant lighting. LEDs have high luminous efficacy, long life, narrow spectrum, and strong spectral selectivity. Many advantages, however, the new commercial high-brightness LED products, the main energy is in the green-yellow wavelength range of 500nm to 600nm, which has an efficient response to human vision and cannot effectively respond to the photosynthesis process. According to the technical principle, it can efficiently respond to the spectrum of photosynthesis Can be achieved by combining different types of semiconductors or photoluminescent materials such as GaN, GaAs, GaP

[0005] At present, artificial light cultivation plants mainly include leafy vegetables, solanaceous vegetables, medicinal plants, hemp plants, flower plants, model plants, bulk economic crops, high-value shrubs, etc. The prior art discloses different growth stages of different plants Spectral energy distribution characteristics, such as peak wavelength, R / B, R / FR, and even specific energy distribution data for specific growth stages of specific plants, but did not propose a spectrum that can satisfy the common and healthy growth of the above various plants

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