Germany developed the energy-efficient LED light source of g

A subsidiary of the German company Siemens recently introduced a hair deep red light-emitting diode (LED) light source of greenhouse fill light can more effectively meet the needs of crop photosynthesis, energy efficiency is also more obvious.

In recent years, the development of high-power LED technology for this success greenhouse fill light in the application of the foundation. Siemens recently issued a press release that the subsidiary "OSRAM Opto Semiconductors' LED greenhouse complement the development of such a light source to achieve the emission wavelength 660 nm, very suitable for plant photosynthesis. In addition, 37% of such an LED light source can input energy is converted to light output, the same color light emission efficiency has been the top, and thus, compared with conventional greenhouse up more energy sources.

Siemens said that a pilot project in Denmark uses about 50,000 LED light sources such as several thousand square meters acreage greenhouse fill light to make energy consumption 40% lower than in the past.

Currently greenhouse artificial light sources are fluorescent lamps, high pressure sodium, low pressure sodium and metal halide lamps, these light sources such as infrared and green spectral composition of a larger proportion of the crop photosynthesis of red, blue spectral components less , solar energy utilization, energy consumption.

Relatively speaking, LED light source can not only improve greenhouse energy utilization, but also different growth stages of the crop targeted to promote crop growth, such as red light helps promote crop to grow taller, Blu-ray will help the formation of germ crops. 10% and 30% in the range of blue targeted to adjust the proportion of the total light also save fertilizers.

Siemens said the red plus blue LED system luminous efficiency than traditional high pressure sodium high 60%, and an average life of LED light is 100,000 hours, can be maintenance-free for many years.