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UV LED Used in plant plants

UV application

UV LED Used in plant plants

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    According to the Chinese academy of agricultural sciences researcher at the institute of agricultural environment and sustainable development of wen-ke liu, enclosed soilless cultivation easy cause the toxic matter accumulation, and TiO2 photocatalysis biodegradable substrate cultivation in the nutrient solution root secretions and rice husk degradation products, the sun's rays only contains 3% of uv light, cover material such as glass filter out more than 60%, can be applied within the facilities; Low temperature and low exposure in winter make it less efficient and stable, which can not meet the demand of vegetable factory production.

  All countries in the world are actively studying the feasibility of using UVLED as tissue culture light source. In terms of the effect of monochromatic light on tissue culture seedlings, the study found that red light UVLED could promote the growth of orchid tissue culture seedlings, but the chlorophyll content, stem and root dry weight were slightly lower than that of fluorescent lamps. By using UVLED to supplement monochromatic red light or far-red light to change the light quality, the length and growth status of potato tissue culture seedlings can be controlled. According to the study, the red light UVLED alone led to the over-extension of chrysanthemum tissue culture seedlings, which resulted in the fragility of the stems. Other important indicators were also reduced, which was not conducive to the normal growth and development of plants on the whole. The main reason is that the monochromatic red light leads to unbalanced distribution of available light energy and inhibits the growth of stem. It was found that the plant height and internode length of all genotypes of grape tissue culture seedlings treated with pure red light UVLED were significantly longer than those treated with fluorescent lamp, but the chlorophyll content and the number of stomata in leaves were the highest with monochromatic blue light UVLED and the lowest with red light UVLED. This indicates that plant height is directly related to rooting ratio, and long wavelength red light is necessary for grape root morphogenesis.

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