Application of LED (Light Emitting Diode) in plant cultivation
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A technology for LED lamps and plants, applied in greenhouse cultivation, botanical equipment and methods, parts and components of lighting devices, etc.
Inactive Publication Date: 2012-04-18
BEIJING FORESTRY UNIVERSITY
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However, no application of LEDs as light sources for plant cultivation has been found so far.
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Embodiment 1
[0023] Example 1: Iris LED light source promoted cultivation test
[0024] The growth of hybrid seedlings of Iris plants was observed, and it was found that most of the hybrid combinations basically stopped growing during the one-month period from late December to late January, and the leaves withered, shrank, and appeared dormancy. Take the two crosses of horse ♀×Siberian iris ‘Lichterfeldius’♂ and Tibet iris ♀×huang iris ♂ as examples.
[0025] The results of the experiment (Figure 1) show that the hybrid seedlings of the two hybrid combinations of horselin♀×Siberian iris'Lichterfeldius'♂ and Tibet iris ♀×huang iris ♂ entered a dormant state from December 27 to January 21. The growth basically stopped and did not resume growth until early March and new leaves were grown.
[0026] For seedlings that enter the dormant state, diodes (LED red: blue 7: 3) are used for light supplementation, the light intensity is 2500 lux, and the light supplement time is from 18:00 to 08:00 the next d...
Embodiment 2
[0027] Example 2 Hemerocallis LED light source promoted cultivation test
[0028] 1. Materials and methods
[0029] Using LED as the light source, the Hemerocallis seedlings in the greenhouse were tested from November 14, 2009 to February 14 of the following year. The light intensity was 2500 lux, and the light supplement time was from 18:00 to 08:00 the next day. Set up a control, repeat three times, randomly discharge the plant material under the light source, measure the number of leaves, plant height, flowering time and flowering number every 15 days to calculate the net growth.
[0030] 2. Results and analysis
[0031] The results of counting the number of leaves, leaf length, and leaf width of Hemerocallis and control respectively are shown in Table 1:
[0032] Table 1 Statistical results of the fill light treatment group
[0033]
[0034] It can be seen from the table that the increase in number of leaves, leaf length, and leaf width net growth after Hemerocallis treatment was si...
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Abstract
The invention provides application of an LED (Light Emitting Diode) in plant cultivation, in particular application of a lamp tube type LED as a light source in plant cultivation. According to the invention, the utilization rate of a light source can be further determined to be improved by adopting a specific mixture ratio of red light to blue light and the growth amount of plants can be effectively improved by adopting specific illumination intensity through research. The lamp tube type LED used as the light source can be widely used for cultivating the plants, in particular for greenhouse plants and can be used for improving the growth efficiency of the plants and reducing energy consumption. The LED is a cold light source, so that the LED can be closed to the plants without burning the plants. The invention further provides a lamp tube type LED light supplementing rack. The height of the light supplementing rack can be adjusted. In addition, the height of each LED lamp can be adjusted according to the heights of the plants. The lamp tube type LED light supplementing rack can be used for supplementing light to the plants from the front side or the side.
Description
Technical field [0001] The invention relates to a novel light source for plant growth. Background technique [0002] The greenhouse can create a suitable small environment for plants that is easy to control, and make the plants free from the influence of the season and environment as much as possible. Greenhouse cultivation technology has now been widely used in various fields of plant cultivation. For example, we can still eat fresh vegetables in winter. This is the result of using greenhouses for off-season vegetable cultivation. In addition, greenhouse cultivation techniques can also be used to cultivate plants of different latitudes. For example, most botanical gardens have various ornamental plants cultivated in greenhouses. [0003] For a long time, natural light has been used for the growth of greenhouse plants. However, due to the loss of sunlight due to the structure and materials of the greenhouse, or the short duration of sunlight due to seasonal reasons, artificial lig...
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