| 摘要 |
Treatment apparatus (10) comprises red-light emitting means (15) and blue-light emitting means (16), in particular diodes, for emitting red light and blue light, respectively, and directing the emitted light into a target zone (14) for irradiation of plant matter (13) when disposed in the zone. The diodes (15, 16) are operable to provide a substantially homogenous blend of the emitted red and blue light in the target zone for at least a major part of the period of emission and to emit the light at wavelengths of 625 to 660 nanometres for the red light and 440 to 470 nanometres for the blue light with intensities in the target zone of up to 500 microEinsteins for the red light and up to 400 microEinsteins for the blue light. The apparatus includes a control unit (21) to control the diodes (15, 16) to provide a predetermined relationship of the intensity of at least one of the emitted red light and emitted blue light to the period of emission of that light so as to ensure that the irradiation is sufficient to achieve the result of stimulating, in the irradiated plant matter, a phytochemical response enhancing nutritional value, storage life or other characteristics.
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