How do plant factories adjust lighting conditions according to the growth stage of plants?
作者: 时间: 2024-06-07
Through intelligent management systems, plant factories can adjust lighting conditions according to the growth stage of plants to meet the needs of different plants for light intensity, light quality and photoperiod. The following are several common adjustment methods:
Light intensity control: LED lights are usually used as artificial light sources in plant factories because LED lights have the advantages of low energy consumption, long life and high light efficiency. By adjusting the number and power of LED lights, the light intensity can be flexibly controlled. For example, leafy plants require lower light intensity in the seedling stage and higher light intensity in the later growth stage.
Light quality control: Different wavelengths of light have different effects on plant growth. Plant factories can provide suitable light quality by using LED lights with specific wavelengths. For example, blue light helps plant growth, while red light is conducive to flowering and fruit formation.
Photoperiod control: Plants have specific needs for photoperiod (the ratio of light time to dark time). Plant factories can accurately control the cycle of light and dark time through timers and automation systems. For example, long-day plants require longer light time, while short-day plants require longer dark time to induce flowering.
Mobile light-filling device: In a three-dimensional plant factory, due to the structural limitations of the cultivation rack, the light distribution between the layers is uneven. To this end, a mobile light-filling device can be used to automatically adjust the light-filling height in real time according to the growth needs of the crop to ensure that each layer of plants can obtain appropriate light.
Intelligent control system: By using an intelligent control system, the light intensity, spectrum and photoperiod can be adjusted in real time according to the actual growth conditions and environmental conditions of the plants to ensure that the plants always receive the best light conditions.
In summary, plant factories can accurately adjust the light conditions according to the growth stage of the plants through a variety of technical means to optimize the growth environment of the plants and improve the yield and quality.