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Farm size light quality control apparatus

A technology for controlling equipment and equipment, applied in the direction of lighting and heating equipment, botany equipment and methods, light sources, etc., can solve problems such as electric shock hazards, complex replacements, etc., and achieve safe installation and inspection, reduced electricity costs, and high radiation use efficiency Effect

Inactive Publication Date: 2010-03-24
大韩民国:农村振兴厅 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional light sources have various disadvantages such as complicated replacement, risk of electric shock caused by worn wiring material, etc.

Method used

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  • Farm size light quality control apparatus
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  • Farm size light quality control apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 3

[0076] Leaf yield of lettuce illuminated by red light

[0077] Table 3 - Yield per leaf of lettuce irradiated by red light

[0078]

light wavelength

Wild lettuce (g / week)

Very fast (Grand

Rapids) (g / week)

loose leaf lettuce

("Toocksum-Jeokchukm

yeon") (g / week)

control group

137.4

115.8

128.8

Red light, 0.330 *

156.7

135.9

144.6

[0079] * µmol m -2 .s -1

[0080]In order to identify the effect of red light irradiation on lettuce at the growth stage, lettuce was irradiated with red light for 2 to 4 hours after sunset in the period from the transplantation period to the late growth period, and then the leaf yield of the lettuce was investigated. The measured results are shown in Table 3 above. Referring to the table, the results of red light irradiation after sunset showed that the leaf yield of lettuce was considerably increased compared to the con...

example 4

[0082] Seed Yield Response of Chinese Cabbage Irradiated by Red Light

[0083] Table 4 - Pod yield of Chinese cabbage irradiated by red light

[0084] light wavelength

Number of pods (qty / week)

Pod weight (g / week)

control group

7.0

0.3

Red light, 0.330 *

13.3

0.9

[0085] * µmol m -2 the s -1

[0086] In order to identify the effect of red light irradiation on stalks (stem expansion) and pods (pod production) of Chinese cabbage, at the beginning of the stalk growth phase in spring, after sunset, plants that had experienced a period of low temperature overwintering in the field The above plants were investigated for pod production after exposure to red light for 2 to 4 hours. The measured results are shown in Table 4 above. Referring to the table, the results of red light irradiation after sunset showed that the number of seed pods and their weight significantly increased after the growth of flower stems of C...

example 5

[0090] Photoreversibility of Flowering of Vegetable Perilla

[0091] To examine the photoreversibility related to the growth and flowering of the vegetable perilla, the plants were subjected to night-time exposure using red LEDs and far-infrared LEDs according to the light quality, sequentially from 11:00 pm in the period from the transplantation stage to the flowering stage. The treatments were night break to investigate flowering of the plants. As a result of the investigation, it was found that flower bud formation showing an alteration to the reproductive growth of plants was suppressed by red light, and then the plants were made to flower by a continuous treatment method using far-infrared light. Next, flowering was again limited by red light. Based on these results, it can be judged that the flowering response of vegetable perilla caused by nocturnal interruption exhibits photoreversibility determined by the activity of photoreceptor proteins (ie, phytochromes). These ...

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Abstract

Disclosed is a light quality control apparatus for crops, capable of ensuring installation, expand and maintenance of a light source, and improving crops growth and seeds collection. According to a demonstration embodiment of the invention, the light quality control apparatus for crops includes a plurality of LEDs arranged in a module mode to control light radiation angles appropriately, and mounted on a support so as to connect a plurality of light quality control apparatus units by a connector easily. The support is in a shape with at least 16 faces so as to improve manufacturing convenienceand irradiate crops equably without shade areas. Furthermore, according to another demonstration embodiment of the invention, the light quality control apparatus for crops is capable of transmittingred light of 660 nm wavelengh to activate phytochrome as photoreceptor protein, so as to control the crops growth, compared with other apparatus, the light quality control apparatus saves 60%-86% electric charge and reduces production costs. For example, if the crops is irradiated by light having at least 0.2 [Mu]mol m<-2>.s<-1> strength, the crops photosynthesis may be improved, such that the crops growth is accelerated. For purple perilla, the light having at least 0.177 [Mu]mol m<-2>.s<-1> strength and 660 [Mu]m wavelengh may restrain the flowering of the crops to ensure the dependable upgrowth of the crops.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application Serial No. 2008-87013 filed September 3, 2008, Korean Patent Application Serial No. 2008-87493 filed September 4, 2008, and Korean Patent Application Serial No. 2008-87494 filed with the Korean Intellectual Property Office, and will The disclosure thereof is incorporated herein by reference. technical field [0003] Embodiments of the present invention relate to farm-scale light quality control devices for crops that include red light emitting diodes to promote crop growth. Background technique [0004] Light is the source of energy for plant photosynthesis and a source of information on photoperiodic phenomena and photomorphogenesis as well as day length effects. In light radiation to plants, the photomorphogenesis of plants and the distribution of photosynthetic products are affected by the ratio of red / far-infrared light, as reported by Kasperbauer in...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V19/00A01G9/20F21Y101/02F21Y107/40F21Y115/10
Inventor 洪性昌申平均张安徹李基尚洪洙烈
Owner 大韩民国:农村振兴厅
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