LED lighting reduces energy plant factory
Plant Factory has been internationally recognized as the most advanced stage of development facilities, agriculture, horticulture is the inevitable trend of future development is one important indicator to measure the level of a national agricultural high-tech development. Compared with the open field agricultural systems, plant factory production systems with higher controllability and stability of great value in solving the world's resources, environment and food security, climate change and extreme weather disasters. Plant Factory light sources can be divided by artificial light and sunlight plant factory plant two kinds of plants. However, the definition of the international plant factory narrowly refers to artificial light plant factory.
The inherent nature of the technical features of artificial light plant factories include four points: (1) required for plant growth and development of intelligent control environmental factors such as temperature, humidity, CO2 concentration, light, air, etc.; (2) the use of soilless plant cultivation stereo multilayer cultivation model, the general DFT, NFT, aeroponics and semi-hydroponic fertilizer integrated approach to supply and control; (3) electric light artificial lighting technology, providing energy and light environment photosynthesis signals through electric light for plants; (4 ) maintenance building structure is fully enclosed, sealed and strong, opacity, good heat insulation. Intelligent control of factors of production is the most essential features of plant factory, which is a prerequisite to the fourth point, covering the first three points above the nature of the technical features.
Light-emitting diode (Light-emittingdiode, LED) is a semiconductor solid-state light source is a fluorescent lamp and other traditional sources of plant factories ideal alternative, energy-saving effect is obvious. As importantly, the development of LED semiconductor lighting technology for plant factory energy sources and environmental intelligent control provides hardware conditions, the maximum energy saving potential is to achieve a light quality, intelligent control of light intensity and photoperiod. Meanwhile, light as an effective environmental factors regulating plant growth and development and yield and quality formation, light environment is crucial to improve the regulation of artificial light plant factory production efficiency. Currently, the plant factory there is a high energy LED light source, the light energy utilization is low, the lack of light environment precise control technology and other outstanding issues, to carry out major horticultural crops plant plant optimization parameter control mode light environment research is to reduce the energy consumption of LED lighting systems, increasing productivity only way.