Method for controlling the growth of photosynthetic plants, and control device for controlling the growth of photosynthetic plants.

Abstract

This invention provides a method for controlling the growth of photosynthetic plants that can effectively regulate their growth. [Solution] For photosynthetic plants to be cultivated, irradiation is performed with primary light (sunlight, artificial light, etc.) which is stronger than the light compensation point for photosynthesis, and additional signal light (random vibration light only, a combination of random vibration light and periodic vibration light, etc.) which has a light intensity lower than the primary light and weaker than the light compensation point, and whose light intensity fluctuates over time. The irradiation of the additional signal light is performed simultaneously with the primary light or during periods when the primary light is not being irradiated. The additional signal light has a waveform formed so as not to be periodic, and is random vibration light which has a lower effect on photosynthesis compared to additional signal light with periodicity (periodic vibration light, etc.).

Claims

1. For photosynthesis in the photosynthetic plants being cultivated, the irradiation of principal light, which is stronger than the light compensation point, The system irradiates an additional signal light whose light intensity is lower than that of the principal light and weaker than that of the light compensation point, and whose light intensity fluctuates over time. The irradiation of the additional signal light is performed simultaneously with the main light, or during a period when the main light is not irradiating. A method for controlling the growth of photosynthetic plants, wherein the additional signal light has a waveform formed without periodicity, and is randomly oscillating light that has a lower effect on photosynthesis compared to additional signal light with periodicity.

2. The method for controlling the growth of photosynthetic plants according to claim 1, wherein the irradiation of the photosynthetic plants with randomly vibrating light induces photostress in the cells of the photosynthetic plants.

3. The method for controlling the growth of photosynthetic plants according to claim 2, wherein irradiation with randomly vibrating light promotes the conversion of carbohydrates, which are photosynthetic products, into antioxidants, thereby suppressing the growth process of photosynthetic plants.

4. The method for controlling the growth of photosynthetic plants according to claim 3, characterized in that the control of the growth process of photosynthetic plants is at least one of the following: suppression of weight gain of photosynthetic plants, suppression of flowering, and increased production of specific metabolites.

5. The method for controlling the growth of photosynthetic plants according to any one of claims 1 to 4, wherein the irradiation of the randomly vibrating light is carried out in a series of blocks at predetermined time intervals.

6. A photosynthetic plant growth control device that irradiates the photosynthetic plant to be cultivated with the primary light required for photosynthesis, An additional light source that emits additional signal light in addition to the main light, The system includes an irradiation light control unit capable of driving and controlling the additional light source, The light intensity of the additional signal light is relatively smaller than the principal light and the light compensation point of the photosynthetic plant, and fluctuates over time. The aforementioned additional signal light has a waveform formed without periodicity, and is randomly oscillating light with a lower effect on photosynthesis compared to additional signal light with periodicity. A photosynthetic plant growth control device that adjusts the growth of photosynthetic plants by irradiating them with randomly vibrating light.

7. The photosynthetic plant growth control device according to claim 6, comprising a main light source that emits the aforementioned main light.

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