A kind of cultivation light environment and cultivation method of lettuce vegetables

Abstract

The invention discloses a light environment for the cultivation of lettuce vegetables. In the light environment, the light quantum number with a wavelength of 380-399nm accounts for ≤0.1%, and the light quantum number with a wavelength of 400-499nm accounts for 13-15%. , the number of photons with a wavelength of 500-599nm accounted for 17-19%, the number of photons with a wavelength of 600-699nm accounted for 50-55%, and the number of photons with a wavelength of 700-780nm accounted for 13-17%; , in the 400‑499nm band, the proportion of photons with a wavelength of 436nm is ≥ 1.2%, and the proportion of photons with a wavelength of 480nm is ≥0.85%; in the 600‑699nm band, the proportion of photons with a wavelength of 630nm is ≥0.78 %, the proportion of photons with a wavelength of 660nm is ≥1.35%; the proportion of photons with a wavelength of 730nm in the 700-780nm band is ≥1.35%.

Description

technical field [0001] The invention relates to a plant cultivation light environment, in particular to a cultivation light environment of lettuce vegetables. Background technique [0002] In artificial light-type closed plant factories, artificial light sources are used instead of sunlight as the power source for plant growth to provide a light environment for plant growth. At present, traditional fluorescent lamps are mainly used in the cultivation of leafy vegetables, and their spectrum is based on the selection of light by the human eye. The product design meets the "photometric system" evaluation system, but it is not suitable for plants. Some bands in the spectrum are not needed for plant growth, which greatly wastes light energy and increases the operating costs of plant factories. At the same time, fluorescent lamps have high energy consumption and short lifespan. Short, easy to break and many other shortcomings. With the development of semiconductor technology, man...

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Problems solved by technology

[0002] In artificial light-type closed plant factories, artificial light sources are used instead of sunlight as the power source for plant growth to provide a light environment for plant growth. At present, traditional fluorescent lamps are mainly used in the cultivation of leafy vegetables, and their spectrum is based on the selection of light by the human eye. The product design meets the "photometric system" evaluation system, but it is not suitable for plants. Some bands in the spectrum are not needed for plant growth, which greatly wastes light energy and increases the operating costs of plant factories. At the same time, fluorescent lamps have high energy consumption and short lifespan. Short, fragile and many other disadvantages

With the development of semiconductor technology, many scientific research teams have carried out related research based on the advantages of LED technology, such as CN201320601030.9 "vegetable growth lamp", CN201510560130.5 "a kind of LED composite full spectrum that promotes plant growth", CN201510769588.1 "has Continuous-spectrum LED plant growth lamps", CN102084793A "A LED lamp spectrum ratio method for promoting or controlling plant growth", CN102210239A "Plant growth regulation lamps", etc., all disclose related achievements of plant light sources, mentioning the use of LEDs with different wavelength bands Chips or combined with phosphor technology to prepare plant growth spectra, but for practical applications, there are still problems: 1. The "light quantum measurement system" is not used for plant lighting sources or spectra, which misleads users; 2. Specific spectra are not proposed for specific plant species Energy distribution; 3. No specific light intensity is proposed for specific plant species

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