The combination of "light" and "energy"

The afternoon of May 12, 2011, organized by the alliance national semiconductor lighting project, the theme of 'light' and '' of LED in forestry and gardening application of "Chinese Shanghai international new light & New Energy Lighting Forum Forum held in Shanghai Galaxy Hotel. The forum hosted by OSRAM Opto Semiconductors Asia Ltd., Asia Pacific Marketing Director Zhong Jiecong will be on the necessity of Professor Xu Zhigang of Nanjing Agricultural University College of agriculture of LED in plants and research progress of the application of LED in protected cultivation made a wonderful speech, at the same time, from Holland to Japan and American Professionals together around research and key problems of LED experience in agriculture and plant plant in the field of communication and exchange of full, and the application prospect of LED in plant factory and development trend analysis.

The forum speakers include the Michigan State University of agriculture and natural resources, associate professor Erik S. RUNKLE, Department of horticulture professor at the world horticultural industry renowned Japanese Chiba University environmental health education research center of ancient urban horticulture science studies at the Chinese Academy of Agricultural Sciences of agricultural environment and sustainable development, OSRAM Opto Semiconductors mapletree SSL application Technology Manager Chen Wencheng, Yang Ji Chang PHILPS solid state lighting system of global horticulture lighting director Udo SLOOTEN Van.

LED promote plant growth, so that higher yield, lower energy consumption

The combination of red and blue LED can provide the ideal spectrum for the photosynthesis of plants. It is an important artificial light source in the field of agriculture and biology in the future. Especially, the 400~700 nanometer wavelength light source is more conducive to the lighting of the plant. "On this forum, Professor of environmental health and urban horticulture science education at Chiba University in the world enjoys a reputation in the field of horticulture and horticulture.

At the same time, the participating experts generally believe that LED application in the field of agriculture has many advantages, such as LED wavelength type is rich, can be more room for regulation. The light can be focused on a specific wavelength of light irradiation plants, can regulate the flowering and fruit crops, but also to control plant height and plant nutrients. In addition, LED belongs to the cold light source, the heat load is low, close to the plant will not burn, high utilization of light, energy saving. At the same time, the LED is small in size, and can be used for preparing a plurality of shapes of device lamps, which has the advantages of small space occupation, multi-layer cultivation, and convenient installation.

At present, in the greenhouse, greenhouse cultivation, to make up for the lack of the use of the light source is generally fluorescent lamp, high pressure sodium lamp and incandescent lamp, etc., due to the high heat of the fluorescent lamp, not too close to the plant, so as not to burn. This not only increases the power consumption but also increases the indoor heat load, which prompted researchers to replace the fluorescent lamp with LED cold light source.

Especially in recent years, a large number of research results prove that LED can be used as tissue culture, greenhouse, closed plant factory of artificial light, such as plant growth by contrast test LED, fluorescent light and natural light conditions, showed that the LED growth rate higher than other light conditions in the plant, leaf area, leaf number, leaf growth speed fast growth is deeply rooted, consistent, superior growth.

Great potential for industrial development

At present, China has reached 337 hm2 greenhouse area, which accounted for about 25% of the greenhouse, the most important benefit of the growing industry. In the southeast coastal areas, the solar energy received by the ground decreased than the national overall downward trend is more severe, the LED light is to solve production facilities by way of weak light control. Xu Zhigang, professor at the College of agriculture, Nanjing Agricultural University, a special mention in the forum speech.

At present, the research and application of LED light source in the field of plant cultivation has attracted more and more attention in the world, in the United States, Japan, Germany and the Nordic countries such as Canada, has developed a wide variety of plants, for the future of agricultural production has opened up a new path. Because of the shorter daylight hours in northern Europe, Central Europe and Canada, LED lighting has a huge market potential in these countries and regions. As in this forum, PHILPS solid state lighting system of global horticulture lighting director Udo Van Mr. SLOOTEN also made it clear that "in the future city plant factory will be a big trend, and LED lighting in the city will play an important role in plant factory. We want to tell growers that the application and input of LED will be well worth it. "

Application of Tomato Growth

Especially in Japan, the application of LED in the field of agriculture has shown strong vitality, built many rely on artificial light to cultivate vegetables "plant factory" across Japan, can be placed in the plant factory, multi culture system, and plant growth speed, such as lettuce, can be harvested two weeks after planting seedlings. With tens of meters square place can produce the equivalent of 20 hectares of arable land products, equivalent to arable land is equal to 2000 times, but also the use of pesticides, not affected by the advantages of climate. Especially in the current global energy shortage under the background of popularization is highly valued by the world LED, is expected in the near future to LED as the core of the artificial lighting technology is in a controlled environment, or even bring, and the industry will also get unprecedented development.

A new topic to be explored

LED will be the most promising artificial light source in the field of agriculture in the future. At the same time a large number of domestic and foreign