In recent years, plant factories have received unprecedented attention. According to the United Nations, the global population will reach 9.5 billion by 2050, and the human food demand will increase by 70%-100% compared with the present, while the per capita arable land area has dropped from 0.33hm2 to 0.22hm2 in the last 30 years, a drop of 31.7%.
Among the many environmental factors that affect plant growth, light is one of the most important factors. The so-called "everything grows by the sun", the requirements of plants for light are mainly the color of light, spectrum, light intensity and illumination time. Therefore, by artificially developing the illumination of a specific spectral illumination product, plant growth can be greatly improved.
It is understood that the electricity cost in the production cost of plant factories accounts for about 30%. If there is no cheap power supply and high efficiency artificial lighting to reduce production costs, plant factories are not very attractive to farmers. Therefore, the development of resource-saving light sources is a necessary need to build plant factories.
In addition, in recent years, with the improvement of agricultural productivity, greenhouse greenhouses have developed rapidly. Traditional greenhouse greenhouses generally use common electric light sources to supplement lighting and apply different covering materials and other agricultural technical measures. These measures have different degrees of problems: lack of specific spectrum The analysis of the components leads to impure optical quality treatment, inconsistent light intensity, lower than the plant light compensation point, and low energy efficiency of the illumination source. Plant cultivation lamps developed by developed countries such as Japan, the United States, and the Netherlands are mainly based on LED light sources, but the upstream technology and core patents of LED lighting products are monopolized by large foreign companies, resulting in high cost of LED plant lighting products on the market. , technology monopoly, manual operation switches, difficult to promote and popularize.
Test development and process
Sunlight is composed of many different wavelengths of light, and only a very small part of the solar radiation spectrum affects photosynthesis, accounting for about 5% of the proportion of sunlight. As early as 2006, Hongyuan began to study the special spectrum of plant lights. Through research, the best ratio of red light of 620-680nm and blue-violet light of 400-500nm was obtained, and the electrodeless plant lamp was successfully developed.
The Hongyuan Intelligent Plant Factory is an efficient agricultural system that achieves continuous crop production through high-precision environmental control in the facility. As shown in Figure 1 and Figure 2, it is based on the B/S architecture and remote control via WIFI. Environmental factors such as temperature, humidity, light, and carbon dioxide concentration during crop growth are automatically controlled and are not subject to external conditions.
The following are some of the study parameters:
(1) Lettuce: The light sources of colonization and seedlings are respectively suitable for the growth of red light blue light 6:1 and 7:1 light sources.
(2) Amaranth: The ratio of plant height, stem diameter and leaf width of amaranth under red/blue 7:1 treatment was significantly higher than other treatments.
(3) Cucumber: 7:2 is the best red-blue ratio for the growth of cucumber seedlings. The 7:1 growth period is the best red and blue light ratio.
(4) Green vegetables, water spinach: 7:1 is the best red and blue light ratio for the growth of green vegetables and spinach leaves.
(5) White radish: the most suitable light quality for growth: red and blue light ratio of 8:1.
(6) Oil wheat: The ratio of red and blue light is 9:1, which is conducive to the growth of oil wheat.
(7) Strawberries and tomatoes: Red and blue light 9:1 is most beneficial for the growth of strawberries and tomatoes, and the fruit is full and nutritious.
(8) Holly: Red and blue light are arranged in a ratio of 8:1. The holly grows best, is strong and has a very developed root system.
(9) Sprouts: The most obvious effect is the ratio of red, green and blue light at 6:2:1.
(10) Calla Lily: The growth rate is best with a ratio of red and blue light of 6:2.
(11) Anthurium Sun: Comprehensive analysis, red and blue light 7:3 treatment is better, which is conducive to morphology, root growth and dry matter accumulation.
(12) Dendrobium candidum: red blue light 7:3, its proliferation effect is best; 6:4, it is more conducive to photosynthesis and material accumulation of seedlings.
Telescopic
steel cover (Telescopic steel shield)has
advantages of good sealing, can prevent iron filings and the coolant fluid. Product
is durable, smooth operation, low noise. It has beautiful appearance. It can
bring perfect appearance to the machine tool factory. Shields and machine tool are indispensable partners.
Our telescopic steel cover (telescopic steel shields)can meet the requirements of modern machine tools for high-tech, correct installation position, and high working speed, etc.
When the running speed is below 15m/min,the working method of the cover is in turn, sliding between the box body. When running at high speed, shield driven by different ways are needed to ensure that each box to synchronous operation and eliminate the jostling between each other.
Telescopic Steel Covers (telescopic steel shields)are not simple products to manufacture. They require high-quality materials and components, as well as sophisticated manufacture technologies. High movement speeds call for continuous innovation.
Special anti-friction brass guides or wipers with polyurethane rubber are inserted on the sides of telescopic steel covers(telescopic steel shields), at the discretion of the engineer based on speed, seal and dimensions.
The steel used is extremely high quality in terms of flatness, corrosion resistance and wear resistance. Thickness Steel Covers may also be made of stainless steel.
For high speeds or weights, special bearings are inserted for smooth, silent movement. Telescopic Steel Covers (telescopic steel shields)with bearings require tempered or auxiliary guides.
Compact, low-speed Telescopic Steel Covers (telescopic steel shields)are equipped with special anti-friction brass or non-metallic guides.
Wipers keep the surface clean and prevent chips and shavings from getting onto expensive rails. They must be heat and coolant resistant, and thus are made of polyurethane, with or without a protective stainless steel chip guard.
For high speeds, shock absorbers are inserted in these positions. They are very effective in reducing impact between boxes during movement. There shock absorbers allow working speeds considerably higher than those previously possible, while simultaneously reducing noise levels and wear. This innovation, together with precision production methods, makes it possible to accommodate even the fastest machine tools.
For heavy covers:
1) Over 110kg for horizontal covers
2) Over 70kg for front or vertical covers.
Special supports are included for easy, secure lifting.
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