At this stage, the global climate change intensely, and the extreme weather are more frequent than in modern times. From 2011,2012 Northern Hemisphere increasingly getting colder, From the perspective of clouds covering rate, rainfall intensity in 2011, the deduction time of lighting will be a harmful factor for the agricultural development. LED Grow lights and plant lights led factory have become another remedy way in the agricultural academia.
Japan’s central government, local government (County Road), starting from the 2011, to coach local agricultural industry, plant factories to develop grow light manufactory.
Japan’s government put forward policy of remedying plant lights led factory in 2009, total spent 14.6 billion(Ministry of Agriculture, Forestry and Fisheries of about 9.6 billion yuan; the Ministry of Economy, Trade and Industry is about 50 billion) to build planting factories. Up to the 2010, an additional 1.04 billion yen completely provided to artificial plant factory with high added value technology development. Benefit from the subvention, the number of plant factory from 50 in 2009, gradually increased to more than 100 specifications, which include artificial light and the sun-light-type plant factory.
The main coause of the prevalence of plant lights led facotory.
Firstly, the high cost of agricultural land.
Secondly, the high temperature,LED High Bay light, in summer.
Thirdly, resources and related equipment is easier to obtain. It is also contributed the main cause of the plant factory.
Fourthly, Greenhouse hydroponic leafy vegetables in Japan have a certain market. Using plant lights led factory to cultivate vegetables, consumers can be fully accepted.
Fifthly, The large demand for high-quality vegetables among consumers, and they are willing to pay.
Sixthly, The related power consumption equipment upgrade, especially the performance of light and air-conditioning equipment has been greatly enhanced.
Seventhly, Japan’ s government strongly advocate and promote the high percentage of the subsidy, and regardless of enterprise or farmer.
However, plant lights led is not only adopting LED Street Light source. The early planning is to use fluorescent lamp which is in accordance with a specific wavelength to supply the plant. In addition, it has been developed a long time. And the more power, energy saving, better ability to specify the wavelength of the LED lighting considered the advantage of combining variety of wavelength, which become the expectancy of plant lighting. At the same time, the benefits of long-term use of energy-saving, the less replaced time than the fluorescent tubes are more obvious.