Method for accelerating plant growth by LED (Light Emitting Diode) light source

Abstract

The invention discloses a method for accelerating plant growth by an LED (Light Emitting Diode) light source, and the method has good growth acceleration action on the whole growth process of plants. The method is characterized in that an LED light source which can emit red light and blue light is used for irradiating plants to accelerate plant growth, wherein the ratio of the red light to the blue light is adjustable, the wavelength of the red light is 610-720 nanometers, and the wavelength of the blue light is 400-500 nanometers. The method for accelerating plant growth is mainly used for irradiating plants during greenhouse planting. According to irradiation, the average growth speed of the plant is about 3 times higher than the growth speed under the natural environment, thereby satisfying the requirements on chlorophyll, anthocyanin and carotene required by photosynthesis of plants in winter; thus, the harvesting time of vegetables and fruits are advanced by 20%, and the yield isincreased by 30-50%; and in addition, the sweetness of the vegetables and fruits is improved, and plant diseases and insect pests are reduced.

Description

Technical field [0001] The invention relates to an LED light source made based on semiconductor light-emitting diodes, and in particular to a method for promoting plant growth by using the LED light source. Background technique [0002] At present, when planting in a greenhouse, plant lights are usually used to supplement light for plants. When supplementing the light, the light source is located about 0.5 meters above the plant leaves, and the light is continuously illuminated for 12 to 16 hours a day. [0003] There are data records that different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength between 400 and 700 nanometers (nm); while those with a wavelength between 400 and 500 nanometers (nm) Blue light and red light with a wavelength between 610 and 720 nanometers (nm) contribute the most to photosynthesis. [0004] Blue LEDs usually emit blue light with a wavelength of about 470nm and r...

AI Technical Summary

Problems solved by technology

This kind of plant growth lamp with a fixed ratio of red and blue light can only play a good role in promoting the growth of plants during certain growth periods of the plants, but cannot play a good role in promoting the growth of plants during other growth periods of the plants. , that is, it cannot play a good role in promoting the growth of plants in the whole process of plant growth.

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