CN104748073A - Full spectrum suitable for LED plant growing compound light - Google Patents
Full spectrum suitable for LED plant growing compound light Download PDFInfo
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- CN104748073A CN104748073A CN201410848476.0A CN201410848476A CN104748073A CN 104748073 A CN104748073 A CN 104748073A CN 201410848476 A CN201410848476 A CN 201410848476A CN 104748073 A CN104748073 A CN 104748073A
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Abstract
The invention discloses a full spectrum suitable for LED plant growing compound light. Light emitted from an LED light source shines on rare earth phosphors and then an emission spectrum band is produced, and the emission spectrum band comprises two or more emission peaks ranging from 350 nm to 1100 nm. Quantum dot materials are added into the rare earth phosphors. By means of the selection of composition elements of the quantum dot materials and the adjustment of diameter of particles, the adjustment for the emission peaks of the emission spectrum band in a full band range ranging from 350 nm to 1100 nm is achieved. The full spectrum has the advantages that the anaclasis consumption rate is lowered, the light efficiency is improved, and the use is convenient.
Description
Technical field
The invention belongs to LED lamp bead field, particularly a kind of full spectrum being suitable for LED plant growth complex light.
Background technology
Illumination is the necessary requirement of plant growth, but the intensity of sunshine geographic latitude, season and weather conditions and changes, so often occur that illumination is not enough, so that illumination condition does not reach the situation that plant growth needs.
Known according to related data research, the illumination affecting plant growth is divided into light quality (spectrum/wavelength) and light intensity (i.e. the brightness of light, the efficiency of light).As shown in Figure 1, the light of different light medium has different impacts to plant growth, and wavelength has significant facilitation in the scope of 300-1100NM to photosynthesis of plant.As shown in Figure 3 and Figure 4, the light of different light intensity has different impacts to plant growth, and different plant is also different to the requirement of light intensity.And the photosynthesis of plant is divided into the bright reaction of photosynthesis and photosynthesis dark reaction, meet the normal photosynthetic light intensity requirement of plant, this is wherein divided into again light compensation point and light saturation point.When light intensity is lower than light compensation point, plant carries out photosynthesis dark reaction.When light intensity is higher than light compensation point, plant carries out the bright reaction of photosynthesis.In addition, light intensity is larger, and Plant Light synthesis rate is faster, until reach the peak efficiency of Plant Light synthesis after light saturation point.
For the situation of illumination deficiency, conventional lamp mainly fluorescent lamp, metal halide lamp, high-pressure mercury lamp and the incandescent lamp that light filling uses.The spectrum of these conventional light source is to selected by the adaptability of light according to human eye, its spectroscopic light source contains many unnecessary wavelength, promote less to the growth of plant, also have that energy consumption is high, the life-span is short simultaneously, easy fragmentation and mercurous environmental pollution etc. exist many shortcomings.The light fixture of LED Light-Emitting Diode is technology up-to-date at present, is made up of III-V.If the solid semiconductor light sources such as GaAs (GaAs), GaP (gallium phosphide), GaAsP (gallium arsenide phosphide) are as luminescent material, form PN junction.When two ends add forward voltage, the carrier generation compound in semiconductor, releases superfluous energy excitation photo emissions visible ray.LED lamp, as forth generation novel illumination light source, has energy-conserving and environment-protective, safe and reliable, long service life, the response time is short, volume is little, caloric value is few, is easy to many important advantage being different from other electric light sources such as dispersion or combination control.LED fosterage of plants lamp obtains light fixture by blue light and ruddiness LED light source being packaged together, and controls spectrum change by regulating the ratio of red, blue LED light source.Correlative study shows, except containing except a large amount of chlorophyll, carotenoid and anthocyanidin in plant, also contains the photosensitive acceptor of some trace, such as phytochrome, cryptochrome and ultraviolet B acceptor.Wherein, phytochrome is most important in plant, the photosensitive acceptor of one that is that study the most deep, and it is absorbed with unkehr effect to ruddiness and far-red light.Phytochrome has two kinds of forms that can transform mutually: the Pr type (maximum absorption band is at the 660nm of red light district) of absorptive red light (R) and the Pfr type (maximum absorption band is at the 730nm in far-red light district) of absorption far-red light (FR), Pr is physiology passivation type, and Pfr is physiological activation type.The absorption spectrum of Pr and Pfr has considerable overlap on visible light wave range, therefore under natural lighting, in plant, there is the phytochrome of Pfr type and Pr type two kinds of forms simultaneously, Pfr phytochrome total amount (Ptot=Pr+Pfr) only occupies certain ratio (Pfr/Ptot), this ratio is 0.025 under saturated far-red light, be 0.6 under saturated white light, when this ratio changes, the physiological change in plant can be caused.
The forties in 20th century take chlorella as the quantum yield of investigation of materials different light medium, although find that the far-red light being greater than 680nm still can by Chlorophyll absorption, quantum yield sharply declines, and this phenomenon is called as red drop phenomenon.Nineteen fifty-seven, Emerson observes chlorella adds a bit slightly short wavelength light (such as 650NM) when irradiating with far-red light, then quantum yield increases, and the summation of irradiating separately than the light of these two kinds of wavelength is taller.This light of adding shorter wavelength outside long wave far-red light can promote that the phenomenon that photosynthetic efficiency improves greatly is called as two gain of light effect or claims Emerson enhancement effect.Related experiment evidence and theoretical research all prove, far-red light, in growing process, has quite high using value.
The LED plant growth lamp of prior art is divided into following two kinds of modes:
Mode one: be the combination of red, blue LED light source, owing to being only the combination of red, blue LED light source, when being suitable only for the light fixture of different wavelengths of light needed for different plant when applying, need to find the full-spectrum LED light source of different-waveband between 350 ~ 1000nm, this is difficult to realize in the actual production of light fixture manufacturer, particularly can't realize far-red light LED light source technically at present, namely enablely be embodied as that this is also abnormal expensive; And the LED light source forward voltage VF value of different-waveband is all different, the circuit design which results in LED lamp will be quite complicated, and reliability reduces, and is unfavorable for large-scale production, is difficult to the power drives finding coupling simultaneously; In addition, when several red LED light source and blue led combination of light sources, can be one section of red, one section of indigo plant there is no the light sent in complete mixed light situation, plant is a part of branches and leaves ruddiness, a part of branches and leaves blue light to actual impinging upon, be only simple two kinds of coloured light but not the light of uniformity, as the RGB usually seen three kinds of coloured light, instead of the white light of uniformity, such light is radiated at the needs that plant can not meet plant growth.Mode two: LED plant lamp lampshade inner surface and/outer surface is provided with quanta point material layer, the light that light source sends comprises the emission peak within the scope of two or more 400 ~ 1100nm by the emission spectrum wave band after quantum dot material layer, although it is uneven that this mode solves light in mode one, there is the problems such as voltage VF value is different.In actual production process, because the environment of plant growth is different, the style of the light fixture used also is different.Required lampshade is also different.Therefore, by arranging this technique of quantum dot material layer at lampshade, the technique in production application is very complicated, and cost is abnormal expensive.And can be known according to Fig. 3 and Fig. 4, the necessary requirement of plant growth, except needing the spectrum of specific wavelength, also needs enough light intensity.The light of different light intensity has different impacts to plant growth, and different plant is different to the requirement of light intensity.Light intensity is larger, and Plant Light synthesis rate is faster.But the light intensity effect penetrated in this way can be very low, and most plants all needs strong illumination.Which results in the needs that the light intensity be radiated on plant can not meet plant growth.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of reduction anaclasis consumption rate, improve light efficiency, and the easy to use full spectrum being suitable for LED plant growth complex light.
The object of the invention is to, provide a kind of full spectrum being suitable for LED plant growth complex light, wherein, the illumination that LED light source sends is mapped to the rear emission spectrum wave band produced on fluorescent RE powder and comprises the emission peak within the scope of two or more 350 ~ 1100nm.Quanta point material is added in fluorescent RE powder; By to the selection of quanta point material component and the adjustment of particle diameter, realize the adjustment of emission peak in 350 ~ 1100nm full band range to emission spectrum wave band.Thus, the illumination that LED light source sends is mapped on fluorescent RE powder, by the light absorbing energy of the quanta point material in fluorescent RE powder, and is excited, and then reflects complex light.The adjustment of spectral band emission peak positions in 350 ~ 1100nm full band range of complex light after refraction; Thus, compared with the luminescent material that above-mentioned fluorescent RE powder is traditional with quanta point material etc., not only the peak position of emission spectrum wave band is adjustable, and half-peak breadth is also wider, and the modulation for the specific spectra needed for plant growth is very favourable; By the selection of quanta point material component and the adjustment of particle diameter, the adjustment of emission peak positions in 350 ~ 1100nm full band range of emission spectrum wave band can be realized easily, thus provide required specific spectra for the photosynthesis of plant growth; By arranging fluorescent RE powder (as Fig. 2 layer 1, as 1 layer 2, Fig. 2 b layer), only use a kind of LED light source just can provide the adjustable emission spectrum of peak position in full band range, avoid the somewhat complex design of circuit and driving power, but also the light uniformity that LED fosterage of plants lamp can be made to send, avoid occurring the incomplete phenomenon of mixed light.And directly luminous by fluorescent RE powder by LED light source, effectively reduce anaclasis consumption rate, improve light efficiency.The light efficiency luminescent material more traditional than quanta point material etc. is high.Thus, the wavelength of above-mentioned 350-1100nm scope has significant impact to the photosynthesis of plant and the growth of plant cell, and especially the ruddiness of 610 ~ 720nm and the far-red light of 720 ~ 1000nm are radiated at simultaneously and plant can produce two gain of light effect (Emerson enhancement effect) and promote that photosynthetic efficiency improves greatly.
In some embodiments, emission spectrum wave band comprises at least one emission peak scope at the visible light wave range of 350 ~ 720nm and at least one emission peak scope far-red light wave band at 720 ~ 1100nm.Thus, the wavelength of 350-1100nm scope has significant impact to the photosynthesis of plant and the growth of plant cell.Thus, the ruddiness of 610 ~ 720nm and the far-red light of 720 ~ 1000nm are radiated at simultaneously and plant can produce two gain of light effect (Emerson enhancement effect) and further promote that photosynthetic efficiency improves greatly.
In some embodiments, emission spectrum wave band comprises the ruddiness of 610 ~ 720nm and the far-red light of 720 ~ 1000nm.
In some embodiments, LED light source is blue light LED light source or royal purple light LED light source, and its emission wavelength is 350 ~ 470nm.
In some embodiments, also yellowish green fluorescent powder is comprised in fluorescent RE powder.Yellowish green fluorescent powder adopts rear-earth-doped yttrium aluminium garnet fluorescent powder.Yellowish green fluorescent powder is subject to separately after blue light LED light source that emission wavelength is 350 ~ 470nm or the primary light that royal purple light LED light source sends excite, and what send is the warm white of colour temperature at 4500 ~ 7000K.Thus, this yellowish green fluorescent powder and above-mentioned fluorescent RE powder are used in combination in fluorescent RE powder, and the warm white of generation has better facilitation to plant growth.
In some embodiments, LED light source is LED blue-light source, and LED blue-light source applies the composite bed that proportion is 100%.Composite bed is made up of the epoxy resin of 1-50% and the red fluorescence powder of 50-99%.The emission spectrum wave band peak position of red fluorescence powder is 660nm.
In some embodiments, LED light source is LED blue-light source, and LED blue-light source applies the composite bed that proportion is 100%.Composite bed is made up of the epoxy resin of the red fluorescence powder of 1-50%, the yellowish green fluorescent powder of 1-50% and 50%-98%.Red fluorescence powder is 660nm in emission spectrum wave band peak position.
In some embodiments, LED light source is LED blue-light source, and LED blue-light source applies the composite bed that proportion is 100%, the second layer compound that described composite bed comprises ground floor compound and is provided with on ground floor compound.Ground floor compound is made up of the yellowish green fluorescent powder of 1-50% and the epoxy resin of 50-99%.Ground floor compound is made up of the red fluorescence powder of 1-50% and the epoxy resin of 50-99%.Red fluorescence powder is 660nm in emission spectrum wave band peak position.
In some embodiments, but LED light source T8 manages or T5 pipe or LEDbulb lamp or high power LED projector or LED down or LED spotlight.
The invention has the beneficial effects as follows and reduce anaclasis consumption rate, improve light efficiency, and easy to use.Emission spectrum wave band is at least to solve the adjustable luminescence of 350 ~ 1100nm full band range, and particularly far-red light is luminous, to provide the problem of the specific spectra met needed for plant growth photosynthesis.
Accompanying drawing explanation
Fig. 1 shows the wavelength of light to the schematic diagram of the impact of plant growth;
Fig. 2 shows the principle of luminosity figure according to LED fosterage of plants lamp of the present invention;
Fig. 2 a shows the principle of luminosity figure according to LED fosterage of plants lamp of the present invention;
Fig. 2 b shows the principle of luminosity figure according to LED fosterage of plants lamp of the present invention;
Fig. 3 shows the schematic diagram of light on the photosynthetic impact of plant growth;
Fig. 4 shows the schematic diagram of light compensation point needed for different plant growth photosynthesis and saturation point;
Fig. 5 shows the spectrogram according to blue light LED light source of the present invention;
Fig. 6 shows the utilizing emitted light spectrogram of the LED fosterage of plants lamp according to the embodiment of the present invention one;
Fig. 7 shows the utilizing emitted light spectrogram of the LED fosterage of plants lamp according to the embodiment of the present invention two;
Fig. 8 shows the spectrogram after according to blue light LED light source of the present invention and yellowish green fluorescent powder compound;
Fig. 9 shows the utilizing emitted light spectrogram of the LED fosterage of plants lamp according to the embodiment of the present invention three;
Figure 10 shows the utilizing emitted light spectrogram of the LED fosterage of plants lamp of comparative example.
Figure 11 shows the utilizing emitted light spectrogram of the LED fosterage of plants lamp according to the embodiment of the present invention four.
Detailed description of the invention
Below in conjunction with accompanying drawing, invention is described in further detail.
As shown in Fig. 2,2b and 5, a kind of full spectrum being suitable for LED plant growth complex light, the illumination that LED light source sends be mapped to fluorescent RE powder (as Fig. 2 layer 1, as Fig. 2 b layer 1 layer 2) upper after the emission spectrum wave band that produces comprise emission peak within the scope of two or more 350 ~ 1100nm.So-called fluorescent RE powder refers to the fluorescent material containing the rare earth element lanthanide series of the 57 to No. 71 (in the periodic table of elements); Comprise Led powder, colour TV powder, lamp tricolor powder.Quanta point material is added in fluorescent RE powder.By to the selection of quanta point material component and the adjustment of particle diameter, realize the adjustment of emission peak in 350 ~ 1100nm full band range to emission spectrum wave band.Namely, the illumination that LED light source sends is mapped on fluorescent RE powder, by the light absorbing energy of the quanta point material in fluorescent RE powder, and be excited and launch complex light, through launching the adjustment of spectral band emission peak in 350 ~ 1100nm full band range of complex light.So, the specific spectra demand of plant growth can be met.Compared with the luminescent material that above-mentioned fluorescent RE powder is traditional with quanta point material etc., not only the peak position of emission spectrum wave band is adjustable, and half-peak breadth is also wider, and the modulation for the specific spectra needed for plant growth is very favourable.By the selection of quanta point material component and the adjustment of particle diameter, the adjustment of emission peak positions in 350 ~ 1100nm full band range of emission spectrum wave band can be realized easily, thus provide required specific spectra for the photosynthesis of plant growth.By arranging fluorescent RE powder, only use a kind of LED light source just can provide the adjustable emission spectrum of peak position in full band range, avoid the somewhat complex design of circuit and driving power, but also the light uniformity that LED fosterage of plants lamp can be made to send, avoid occurring the incomplete phenomenon of mixed light.And directly luminous by fluorescent RE powder by LED light source, effectively reduce anaclasis consumption rate, improve light efficiency.The light efficiency luminescent material more traditional than simple quanta point material etc. is high.So-called quanta point material is generally semi-conducting material, and particle diameter is less than 10nm, and its luminescence is the luminescence that band-to-band transition produces, and fluorescent material is luminous after Doped ions in a kind of matrix, such as Y2O3:Eu3+.If doping is rare earth ion in fluorescent material, so luminous is generally rare earth ion.
Emission spectrum wave band comprises at least one emission peak scope at the visible light wave range of 350 ~ 720nm and at least one emission peak scope far-red light wave band at 720 ~ 1100nm.The wavelength of above-mentioned 350-1100nm scope has significant impact to the photosynthesis of plant and the growth of plant cell, and especially the ruddiness of 610 ~ 720nm and the far-red light of 720 ~ 1000nm are radiated at simultaneously and plant can produce two gain of light effect (Emerson enhancement effect) and promote that photosynthetic efficiency improves greatly.Therefore, when the emission spectrum wave band of above-mentioned fluorescent RE powder (as Fig. 2 layer 1 and 1 layer 2, Fig. 2 b layer) comprises at least one emission peak of at least one emission peak of 350 ~ 720nm visible light wave range and 720 ~ 1100nm far-red light wave band simultaneously, the complex light that LED fosterage of plants lamp sends can improve the efficiency of photosynthesis of plant further, promotes that plant more rapid and better grows.LED light source is blue light LED light source or royal purple light LED light source, and its emission wavelength is 350 ~ 470nm.Above-mentioned blue light or royal purple light LED light source are the LED light sources that the technique of current batch machining is the most ripe.Also yellowish green fluorescent powder is comprised in fluorescent RE powder.Yellowish green fluorescent powder adopts rear-earth-doped YAG (yttrium-aluminium-garnet) fluorescent material.Yellowish green fluorescent powder is subject to separately after blue light LED light source that emission wavelength is 350 ~ 470nm or the primary light that royal purple light LED light source sends excite, and what send is the warm white of colour temperature at 4500 ~ 7000K.This yellowish green fluorescent powder and above-mentioned fluorescent RE powder are used in combination in fluorescent RE powder, and the warm white of generation has better facilitation to plant growth.
Embodiment one
As shown in Figure 6, LED light source is LED blue-light source, and LED blue-light source applies the composite bed that proportion is 100%, and emission spectrum wave band peak position is the red fluorescence powder of 660nm; Described composite bed is made up of the epoxy resin of 1-50% and the fluorescent RE powder of 50-99%.Therefore, emission spectrum wave band peak position comprises the wave band of blue light, ruddiness.Above-mentioned composite bed be made into full-spectrum LED plant growth composite light source lamp pearl and be installed on pedestal; Lampshade is installed on pedestal, and completes the installation of driving power and circuit.
Embodiment two
As Figure 7-8, LED light source is LED blue-light source, LED blue-light source applies proportion be 100% composite bed (as Fig. 2 a), described composite bed is made up of the epoxy resin of the red fluorescence powder of 1-50%, the yellowish green fluorescent powder of 1-50% and 50%-98%; Described red fluorescence powder is 660nm in emission spectrum wave band peak position.Above-mentioned composite bed be made into full-spectrum LED plant growth composite light source lamp pearl and be installed on pedestal; Lampshade is installed on pedestal, and completes the installation of driving power and circuit, make and obtain LED fosterage of plants lamp.Therefore, emission spectrum wave band peak position comprises blue light, green-yellow light, the wave band of ruddiness, far-red light.
Embodiment three
As shown in figs. 9-10, LED light source is LED blue-light source, and LED blue-light source applies the composite bed that proportion is 100%.The second layer compound that composite bed comprises ground floor compound and is provided with on ground floor compound.Ground floor compound is made up of the yellowish green fluorescent powder of 1-50% and the epoxy resin of 50-99%.Ground floor compound is made up of the red fluorescence powder of 1-50% and the epoxy resin of 50-99%.Red fluorescence powder is 660nm in emission spectrum wave band peak position.Above-mentioned composite bed is formed full-spectrum LED plant growth composite light source lamp pearl and is installed on pedestal; Lampshade is installed on pedestal, and completes the installation of driving power and circuit, make and obtain LED fosterage of plants lamp.The emission spectrum complex light of LED fosterage of plants lamp belongs to warm white, and the complex light after blue light LED light source and independent yellowish green fluorescent powder compound belongs to cold white light.
LED lamp structure of the present invention is not limited to the LED of specific style, above-mentioned LED fosterage of plants modulated structure can select T8 pipe (tube diameter 1 inch), T5 manages (tube diameter 5/8 inch), LEDbulb lamp, high power LED projector, LED down, LED spotlight.Etc. the LED style of different model
Be not limited to the LED lamp bead of specific style, the style of LED lamp bead can select 2835,5730,7020, high-power lamp pearl, integrated lamp bulb, the light that the blue light LED light source of the LED lamp bead of all styles such as COB lamp pearl or royal purple light LED light source send comprises the emission peak within the scope of two or more 350 ~ 1100nm by the emission spectrum wave band after the mishmetal fluorescent material of special formulation.
Embodiment four
As shown in figure 11, it is in the compound component of 100% that blue light LED light source is coated in proportion, and the compound (as Fig. 2 b layer 1) of the yellowish green fluorescent powder of accounting 1-50% and the epoxy resin of accounting 50-99% is coated in blue light LED light source, forms full-spectrum LED plant growth composite light source lamp pearl and be installed on pedestal; Lampshade is installed on pedestal, and completes the installation of driving power and circuit, make and obtain LED fosterage of plants lamp
-wherein, as shown in figure 11, complex light belongs to cold white light to the spectrogram after blue light LED light source and independent yellowish green fluorescent powder compound; The principle of luminosity figure of embodiment four LED fosterage of plants lamp.
Comparison example is as follows:
Blue light LED light source and red-light LED light source are installed on pedestal with the ratio of 1:1; Lampshade is installed on pedestal, and completes the installation of driving power and circuit, make and obtain LED fosterage of plants lamp.Comparative example making obtains the utilizing emitted light spectrogram of LED fosterage of plants lamp as shown in Figure 10, comprises the wave band of blue light, ruddiness.
The experiments of measuring one of plant seedling growth under experiment one: LED fosterage of plants light irradiation:
(1) experiment material and processing method
Testing vegetable seeds used is No. 9, Zhejiang University (cultivation of department of agriculture of Zhejiang University), seed is after surface sterilization, be placed in germination box and germinate, wait grow to a leaf wholeheartedly time, select the neat seedling that emerges to carry out water planting, under being divided into two groups to be placed in the LED fosterage of plants lamp of embodiment three and comparative example respectively, carry out photo-irradiation treatment, one time of nutrition liquid is changed every 4 days, condition of culture is 11H/13H (daytime/night), temperature 20 DEG C/14 DEG C (daytime/night), constant humidity 70%.
(2) test index and method of testing
The growthform index of plant seedlings gets the average of 10 strains, grab sample.With ruler measure plant height, root is long, with slide measure measure stem thick.Seedling vigorous index calculates according to seedling vigorous index=(stem thick/plant height) * complete stool dry mass.The photosynthetic speedometer of photosynthetic rate measures, and chlorophyll content adopts acetone, alcohol mixeding liquid extraction method measures, and soluble sugar content takes anthrone colorimetry to measure, and soluble protein content Coomassie Brilliant Blue measures.
(3) experimental result data analysis
For the experimental result data of above-mentioned test gained, adopt SPSS16.0 software to carry out statistical analysis, adopt Deng Kenshi duncan's new multiple range method to carry out Multiple range test.
Analysis result is as table 1 and table 2
Table 1:
Table 2:
Note: in table, data are the mean value of Same Way reprocessing 3 times, and Deng Kenshi duncan's new multiple range method is checked, and lowercase a, b, c represent p < 0.05 level of signifiance; FW represents fresh weight; Chl a and Chl b represents chlorophyll a and chlorophyll b respectively
From the experimental result data of table 1 and table 2, the LED fosterage of plants lamp of the embodiment of the present invention three is used to carry out photo-irradiation treatment, be compared to comparative example, owing to providing more suitable specific spectra and better light mixing effect, photosynthesis rate in plant seedling growth process is faster, the soluble sugar that synthesis obtains, soluble protein content significantly increase, plant seedlings Determination of Chlorophyll content is also more, cultivate that the plant height of plant seedlings obtained is higher, root longer, stem slightly more slightly, fresh weight and dry weight is heavier, seedling vigorous index is larger.
Promote that flowering of plant is tested under experiment two: LED fosterage of plants light irradiation
Experiment material and processing method
Testing plant used is camellia, is treated the camellia in snowfield puts indoor into winter, use embodiment three to make the LED fosterage of plants lamp obtained and carry out photo-irradiation treatment, cultivation irradiation time condition is 16H/8H (ON/OFF), and temperature controls at 15-25 DEG C.
Experimental result data is analyzed
From the visible camellia of experimental result in the indoor of temperature control, use the LED plant growth lamp of the embodiment of the present invention three to carry out photo-irradiation treatment, to bloom required specific spectra and better light mixing effect owing to providing camellia simultaneously after 5 days.Effectively facilitate camellia to bloom.The present invention is not only improved photosynthesis of plant speed.Turn out that plant height is higher, root longer, stem slightly thicker, fresh weight and dry weight is heavier, seedling vigorous index is larger effect.Also has the effect of blooming control.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to the protection domain of invention.
Claims (9)
1. be suitable for a full spectrum for LED plant growth complex light, wherein, the illumination that LED light source sends is mapped to the rear emission spectrum wave band produced on fluorescent RE powder and comprises the emission peak within the scope of two or more 350 ~ 1100nm;
Quanta point material is added in fluorescent RE powder; By to the selection of quanta point material component and the adjustment of particle diameter, realize the adjustment of emission peak in 350 ~ 1100nm full band range to emission spectrum wave band.
2. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1, it is characterized in that, described emission spectrum wave band comprises at least one emission peak scope at the visible light wave range of 350 ~ 720nm and at least one emission peak scope far-red light wave band at 720 ~ 1100nm.
3. a kind of full spectrum being suitable for LED plant growth complex light according to claim 2, it is characterized in that, described emission spectrum wave band comprises the ruddiness of 610 ~ 720nm and the far-red light of 720 ~ 1000nm.
4. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1,2 or 3, is characterized in that, described LED light source is blue light LED light source or royal purple light LED light source, and its emission wavelength is 350 ~ 470nm.
5. a kind of full spectrum being suitable for LED plant growth complex light according to claim 4, is characterized in that, also comprise yellowish green fluorescent powder in described fluorescent RE powder;
Described yellowish green fluorescent powder adopts rear-earth-doped yttrium aluminium garnet fluorescent powder;
Described yellowish green fluorescent powder is subject to separately after blue light LED light source that emission wavelength is 350 ~ 470nm or the primary light that royal purple light LED light source sends excite, and what send is the warm white of colour temperature at 4500 ~ 7000K.
6. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1,2,3 or 5, it is characterized in that, described LED light source is LED blue-light source, LED blue-light source applies the composite bed that proportion is 100%, and described composite bed is made up of the epoxy resin of 1-50% and the red fluorescence powder of 50-99%; The emission spectrum wave band peak position of described red fluorescence powder is 660nm.
7. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1,2,3 or 5, it is characterized in that, described LED light source is LED blue-light source, LED blue-light source applies the composite bed that proportion is 100%, and described composite bed is made up of the epoxy resin of the red fluorescence powder of 1-50%, the yellowish green fluorescent powder of 1-50% and 50%-98%; Described red fluorescence powder is 660nm in emission spectrum wave band peak position.
8. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1,2,3 or 5, it is characterized in that, described LED light source is LED blue-light source, LED blue-light source applies the composite bed that proportion is 100%, the second layer compound that described composite bed comprises ground floor compound and is provided with on ground floor compound;
Described ground floor compound is made up of the yellowish green fluorescent powder of 1-50% and the epoxy resin of 50-99%;
Described ground floor compound is made up of the red fluorescence powder of 1-50% and the epoxy resin of 50-99%;
Described red fluorescence powder is 660nm in emission spectrum wave band peak position.
9. a kind of full spectrum being suitable for LED plant growth complex light according to claim 1,2,3 or 5, it is characterized in that, but described LED light source T8 manages or T5 pipe or LEDbulb lamp or high power LED projector or LED down or LED spotlight.
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Cited By (10)
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| CN105202484A (en) * | 2015-09-04 | 2015-12-30 | 李欣澄 | LED composite full-spectrum light source capable of promoting plant growth |
| CN105240748A (en) * | 2015-11-11 | 2016-01-13 | 郭敏 | LED plant-growth lamp with continuous spectrum |
| CN105698019A (en) * | 2016-04-15 | 2016-06-22 | 福建洛普生物科技有限公司 | Eight-color LED lamp panel used for plant growth |
| CN106090706A (en) * | 2016-08-17 | 2016-11-09 | 江门市赛宁灯饰有限公司 | The full spectrum plant growth lamp that a kind of polycrystalline excites |
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| CN110500530A (en) * | 2019-07-04 | 2019-11-26 | 浙江易鑫电子科技有限公司 | A kind of multifunctional spectrum plant growth lamp |
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