CN1865336A

CN1865336A - Highly effective light-modulating agent and its uses in greenhouse cultivation

Info

Publication number: CN1865336A
Application number: CNA2006100807406A
Authority: CN
Inventors: 林敬文
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2006-11-22
Anticipated expiration: 2026-05-16
Also published as: CN100429267C

Abstract

The invention discloses a method for changing sunlight wavelength, energy capacity proportion and transmission mode through employing diethylbenzene ethylene composition, carrying out liquefying, grinding and granulating to make light modulation agent, then carrying out agglomerate preparation and blow-moulding to obtain highly effective light modulation films.

Description

A kind of highly effective light-modulating agent and the application in booth cultivation thereof

High effective controlling light film that technical field the present invention relates to a kind of highly effective light-modulating agent, produce with highly effective light-modulating agent and the application in booth cultivation thereof belong to photoproduction attitude technical field.

Background technology two during the last ten years, the booth cultivation of China industry is development at a terrific speed, has become agricultural and even mainstay of the national economy industry already.But the booth cultivation industry is stranded because of the restriction of some factor at present.The main restricting factor of booth cultivation industry in photoproduction attitude field, the one, the characteristics of canopy chamber itself and outside meteorological conditions, be that the quantity of illumination is lower than open country and temperature, humidity are higher than open country, cause under the canopy chamber in the soil water body circulation smooth and make Soil degradation, the disease and pest sickness rate increases, and agricultural product quality is low inferior; The 2nd, be subjected to the Photosynthetic characteristics of crop itself, i.e. light compensation point and light saturation point, and top and below base of leaf are accepted the restriction of sunlight intensity difference.The restraining factors of this two aspect all cause the sunlight utilization ratio of the indoor crop of canopy low, cause the sustainable development of booth cultivation industry to be obstructed simultaneously.The key of eliminating above-mentioned restraining factors is to improve photoproduction attitude environment.From the eighties, international and domestic part Study unit and enterprise, utilize rare earth material and organic fluorescence materials to produce the light conversion agricultural film, attempt to address the above problem, but up to now, because rare earth and organic fluorescence materials can not make plastic sheeting for farm use produce enough indigo plant, red photoluminescence peak and area, can not be that the blue light region of 432nm and red light district that centre wavelength is 660nm increase enough radiation quantity to satisfy photosynthetic needs perhaps in centre wavelength, can not make the enough scattered light content of sunlight increase under the canopy, perhaps its fading period is too short, reason such as perhaps light-converting material and resin and other additive compatibleness etc. be not good is difficult to finish the making of high light efficiency plastic sheeting for farm use and makes it industrialization.And the present function of ordinary agricultural membrane only limits to thermal insulation wetting, more can't efficiently utilize solar energy.So the booth cultivation industry very needs a kind of plastic sheeting for farm use of high light efficiency, and carry out the correlation technique reform of booth cultivation thus, the canopy film of continuing to use is during the last ten years updated also improve its cultivation benefit greatly.

Summary of the invention

A kind of highly effective light-modulating agent, it is characterized in that being made up of diethylbenzene vinyl duplex benzene, diethylbenzene base coumaranone, diethyl chlorine bisbenzoxazoles, three benzopyrene ketone, phenanthrene, pyrene, 18 diolefinic acid butyl esters and polyethylene-vinyl acetate alcohol ester, their weight percentage scope is 3-5: 2-5: 3-6: 5-7: 2-3: 7-9: 0.3-0.6: 65-75.

The preparation method of above-mentioned light-modulating agent is characterized in that above-mentioned the first six kind component is pulverized after the fusion in anaerobic atmosphere, and is ground to particle diameter jointly less than 1 μ m with above-mentioned the 7th kind of component, last and the 8th kind of component mixing granulation.

Above-mentioned light-modulating agent adds in PE or the PE-EVA resin with 4 ‰ or 5 ‰ ratio, just can be made into high effective controlling light ecology film and is applied in the booth cultivation with conventional blow moulding.

Highly effective light-modulating agent of the present invention is meant when sunlight sees through high effective controlling light ecology film, can will be adjusted to the blue light that centre wavelength is 432nm more than 50% in the UV-light of 300nm-350nm, can be with the green glow of part 540nm-590nm, be adjusted to the ruddiness that centre wavelength is 660nm, shown in accompanying drawing 2 and accompanying drawing 3, its photoluminescence peak and area ultraphotic conversion film far away and normal film also are its effect of light strength ultraphotic conversion film far away and normal film.And the light intensity effect of scattered light is better under the canopy.The crop light compensation point was arrived in advance and light saturation point is delayed arrival, avoid common canopy chamber and open country two and the successive cloudy days plant growth is stagnated or negative growth sooner or later, can avoid the top base of leaf to surpass light saturation point again and lower floor's base of leaf does not reach the phenomenon of light compensation point.The raising of sunlight utilization ratio more common canopy chamber and open country increase more than 50% under the canopy.Because the raising of sunlight utilization ratio, not only use the canopy chamber of light modulation film can not be subjected to the restriction of sunlight direction, consider wind direction and phreatic trend more, provide prerequisite for preventing Soil degradation; Also make crop in the light modulation film canopy healthy and strong and improve disease resistance, significantly reduce agricultural chemicals usage quantity and chemical fertilizer usage quantity, pollute and the green non-pollution agricultural is given security for reducing; Also because the crop photosynthesis speed of action increases under the light modulation film canopy, crop internal metabolism intermediate concentration increases, make composition quality and the local flavor wind matter of crop all be significantly increased, the value-added content of product and even the people's quality of life is all increased, and this just provides condition for the sustainable development of booth cultivation industry.150 days degree of decay of light-modulating agent of the present invention are lower than 38%, also are that international and domestic other photothermal converting agents are incomparable.

Description of drawings

Accompanying drawing 1 is the real spectrum of a sunlight comparison diagram under the canopy of light modulation film, light conversion film and normal film.

Accompanying drawing 2 is the blue fluorescence emission spectrum comparison diagram of light modulation film, light conversion film and normal film.

Accompanying drawing 3 is the red fluorescence emission spectrum comparison diagram of light modulation film, light conversion film and normal film.

Further specify the present invention below by embodiment.

Embodiment one

Get commercial reagent diethylbenzene vinyl duplex benzene 3.3Kg, luxuriant and rich with fragrance 2.3Kg, pyrene 8.8Kg, diethylbenzene base coumaranone 2.1Kg, diethyl chlorine bisbenzoxazoles 5.1Kg, three benzopyrene ketone 5.0Kg, in anaerobic atmosphere, be heated to 217 ℃ of fusions, pulverize the cooling back, add 18 diolefinic acid butyl ester 0.5Kg, be ground to particle diameter less than 1 μ m, add polyethylene-vinyl acetate alcohol ester 72.9Kg again, use the ordinary method granulation, make light-modulating agent.Light-modulating agent is blown three-layer co-extruded film with 4 ‰ total addition level with ordinary method, or blow single, double layer film with ordinary method with 5 ‰ total addition level, the film that makes is the ecological film of high effective controlling light, and real spectrum of sunlight and fluorescence emission spectrum meet the standard of accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3 under the canopy of this film.

Each single component of highly effective light-modulating agent of the present invention does not all have tangible light modulation effect, must after the particular chemical reaction takes place under the above-mentioned processing condition, just can possess photoluminescence peak that light modulation film manifested and the area shown in accompanying drawing 2 and the accompanying drawing 3, this photoluminescence peak and area exceed several times than international and domestic light conversion film not to be waited to hundred times, and therefore attenuation amplitude has good industrial prospect well below light conversion film.From the real spectrum of accompanying drawing 1 sunlight comparison diagram as can be seen: in centre wavelength is that blue light region and the centre wavelength of 432nm is the red light district of 660nm, and the radiation quantity under the light modulation film significantly improves, and in green Region obvious decline is arranged.The result of Tiao Jieing increases the blue light of the effective centre wavelength 432nm of photosynthesis and the ruddiness content of centre wavelength 660nm under the canopy like this, photosynthesis rate is improved greatly, its outer booth cultivation effect that shows is that plant growth is healthy and strong, avoided the negative growth phenomenon at the indoor successive cloudy days of common canopy and morning and evening two, the color and luster of crop is fresh and tender, and base of leaf is tall and straight.Its actual effect is 1, crop is formed quality and significantly improves, no matter be sun plants such as tomato, grape, strawberry, watermelon, muskmelon, Chinese cabbage etc., or half shade plant such as pimento, cucumber, tealeaves etc., its pol, organic acid content and crude protein content etc. all are significantly increased, the amino acid of tealeaves, the raising of polyphenol content are more obvious, and because the sugar-acid ratio of crop is reasonable, the ammonia phenol of tealeaves is than rationally, so its flavor quality also is significantly increased; 2, output has remarkable increase, and under the equal management condition of kind, the half cloudy crop yield of giving birth to is more than 10%, and sun is given birth to the volume increase of crop and fruit class more than 30%, cauline leaf class crop yield 70%-100%; 3, crop disease-resistant power strengthens, and the usage quantity of agricultural chemicals reduces more than 1/3; 4, shorten vegetative period more than 5 days, help the regulation and control of crop harvesting phase.Above-mentioned effect all can embody in the canopy chamber of various trends well.The high effective controlling light ecological film is applied to grow seedlings, and seedling rate and transplanting survival rate are 100%, and nursery stage can shorten more than 1/4.

Embodiment two

Get diethyl chlorine bisbenzoxazoles 5.99Kg, diethylbenzene base coumaranone 4.97Kg, three benzopyrene ketone 6.90Kg, luxuriant and rich with fragrance 2.91Kg, diethylbenzene vinyl duplex benzene 3.00Kg, pyrene 8.93Kg, in anaerobic atmosphere, be heated to 230 ℃ of fusions, pulverize the cooling back, add 18 diolefinic acid butyl ester 0.51Kg, be ground to particle diameter less than 1 μ m, add polyethylene-vinyl acetate alcohol ester 66.79Kg again, use the ordinary method granulation, make highly effective light-modulating agent.The mode of making high effective controlling light film and the effect of booth cultivation are identical with the foregoing description one.Its light modulation life-span improves more than 2 times than light conversion film, is beneficial to making more longevity and the higher light modulation film of mechanical and physical performance.

Claims

1, a kind of highly effective light-modulating agent, it is characterized in that being made up of diethylbenzene vinyl duplex benzene, diethylbenzene base coumaranone, diethyl chlorine dibenzoxazine, three benzopyrene ketone, phenanthrene, pyrene, 18 diolefinic acid butyl esters and polyethylene-vinyl acetate alcohol ester, their weight percentage scope is 3-5: 2-5: 3-6: 5-7: 2-3: 7-9: 0.3-0.6: 65-75.

2, the preparation method of the described light-modulating agent of claim 1 is characterized in that will pulverizing after the first six the kind component melts in the said components earlier, and grinds last and above-mentioned the 8th kind of component mixing granulation with above-mentioned the 7th kind of component jointly.

3, light-modulating agent common trait as claimed in claim 1 is, adds in PE or the PE-EVA resin with 4 ‰ or 5 ‰ ratio, just can be made into high effective controlling light ecology film and is applied in the booth cultivation with conventional blow moulding.