CN103283721A - An agricultural polyvinyl alcohol film dissolved upon water and a production method thereof - Google Patents
An agricultural polyvinyl alcohol film dissolved upon water and a production method thereof Download PDFInfo
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- CN103283721A CN103283721A CN2013102541318A CN201310254131A CN103283721A CN 103283721 A CN103283721 A CN 103283721A CN 2013102541318 A CN2013102541318 A CN 2013102541318A CN 201310254131 A CN201310254131 A CN 201310254131A CN 103283721 A CN103283721 A CN 103283721A
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- polyvinyl alcohol
- alcohol film
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- dissolving
- plant growth
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Abstract
The invention relates to the field of agricultural technology, and particularly relates to an agricultural polyvinyl alcohol film strip dissolved upon water and a production method thereof. The polyvinyl alcohol film strip is composed of the following components, by weight: 18%-68% of a hydrophilic polyvinyl alcohol, 26% -38% of trace elements, 40% -78% of an insecticide/fungicide, 9% -18% of a plant growth regulator, 0.3% -0.9% of a Tween 80 cross-linking agent, 0.2% -0.8% of a plasticizer, and 0.9%-1.6% of a surfactant. According to the present invention, through adjusting types and doses of the insecticide/fungicide, trace elements and the plant growth regulator in the polyvinyl alcohol film strip, objectives of control and prevention of crop pests and diseases, helping crop growth, and healing and anti-rot are achieved.
Description
Technical field
The present invention relates to agricultural technology field, particularly a kind of chance water self-dissolving agricultural polyethylene alcohol film piece and preparation method thereof.
Background technology
Experienced the pressure of young labor shortage in recent years in the agricultural production, agricultural is as the basic industry of China, and for these years, people are at use of insecticide, when bactericide or plant growth regulator, all need to convert water-soluble solution and just can spray after evenly and irrigate or the spraying soil treatment.Not only time-consuming, but also effort, along with people engaged in agriculture's aging continues to increase, the requirement to the structure of improving desinsection (bacterium) agent and plant growth regulator and kind adapt to agricultural production has caused many manufacturers' concern.
There are following limitation in conventional spraying desinsection (bacterium) and plant growth regulator: conventional desinsection (bacterium) agent is divided into two kinds, a kind ofly is: mix when crop-planting and carry out soil treatment in hack.As oppose hundred chlopyrifos, hot sulphur thimet, Le Siben etc. and kill soil insect, if but insect has been adsorbed on the main root stem of plant, just cut the earth at that time, hack, mix soil and handle, main root stem and the root system of meeting grievous injury plant can be put in order the strain lodging or need the conditioning of long time just can recover original growing way under the big situation of wind when serious.
Second kind of desinsection (bacterium) agent (as dichlorvos, omethoate, orthene, carbendazim, bordeaux mixture, thiophanate methyl, three ring files, mancozeb etc.) and growth regulator need convert water-soluble solution evenly after, need manpower or mechanical force is sprayed on the plant or slowly down drench (being called root irritates) on the rhizome.Not only waste water resource but also wasting manpower and material resources, need beyond thousands of rice, go to carry water at southern mountain area some places, and need fan-shaped lid be installed at shower nozzle, avoid more than wind speed 4 metre per second (m/s)s, spraying, otherwise liquid medicine can spatter and causes " medicament residue " at plant corpus.But no matter how people take precautions against water spray haze and still can rack and escape to the place of tens meters even up to a hundred meters, doing on the object if spatter, after people are edible, can cause constantly accumulation in the human body, time has been grown and has destroyed neural normal function, disturbs human hormone's balance.Along with factor such as shortage of water resources, climatic variation, extreme weather and the people enhancing to food security consciousness, this spraying desinsection (bacterium) more highlights the scarce sex-limited of it.
Summary of the invention
In order to solve prior art problems, the invention provides a kind of chance water self-dissolving agricultural polyethylene alcohol film piece and preparation method thereof, by being contained in desinsection (bacterium) agent in the polyvinyl alcohol film piece or kind and the dosage of trace element and plant growth regulator; Reach and administer and the prevention diseases and pests of agronomic crop, and play auxiliary crop growth, and callus corrosion-resistant purpose.
The technical solution adopted in the present invention is as follows:
A kind of chance water self-dissolving agricultural polyethylene alcohol film piece, its constituent according to part by weight is: hydrophilic polyvinyl alcohol 18%-68%, trace element 26%-38%, insecticidal bactericide 40%-78%, plant growth regulator 9%-18%, Tween 80 crosslinking agent 0.3%-0.9%, plasticizer 0.2%-0.8%, surfactant 0.9%-1.6%.
Polyvinyl alcohol is that the degree of polymerization is 1700, and alcoholysis degree is one or both combinations of 88%-99%.
Trace element is one or more of Peng, Magnesium, zinc.
Insecticidal bactericide is a kind of of bordeaux mixture, carbendazim, thiophanate methyl, copper oxide or omethoate.
Plant growth regulator is 888 synergist, show high brassin lactones, methyl, plant growth regulator 920, day power 168,885 agricultural chemicals synergists, bacterium worm lid gram a kind of.
Plasticizer is glycerine or phthalic acid fat, and described surfactant is that washing powder also can be washing agent.
A kind of preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece may further comprise the steps:
A, with 1788 water-baths of hydrophilic polyvinyl alcohol and put into homogenizer, be warming up in the time of stirring between 70 degrees centigrade-80 degrees centigrade;
B, plasticizer glycerine or ethylene glycol slowly and are uniformly added, stirred 10-30 minutes, temperature is controlled between 80 degrees centigrade-110 degrees centigrade, treats that polyvinyl alcohol mixing liquid fully absorbs plasticizer;
C, adding crosslinking agent Tween 80, surfactant washing powder or washing agent;
D, adding insecticide or bactericide mix, and are pressed into the polyvinyl alcohol film piece by mould.
A kind of preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece may further comprise the steps:
A, with 1799 water-baths of hydrophilic polyvinyl alcohol and put into homogenizer, be warming up in the time of stirring between 70 degrees centigrade-80 degrees centigrade;
B, plasticizer glycerine or ethylene glycol slowly and are uniformly added, stirred 10-30 minutes, temperature is controlled between 80 degrees centigrade-110 degrees centigrade, treats that polyvinyl alcohol mixing liquid fully absorbs plasticizer;
C, adding crosslinking agent Tween 80, surfactant washing powder or washing agent;
D, adding trace element and plant growth regulator mix, and are pressed into the polyvinyl alcohol film piece by mould.
Insecticide is a kind of of bordeaux mixture, carbendazim, thiophanate methyl, copper oxide or omethoate.
Trace element is one or more of Peng, Magnesium, zinc, described plant growth regulator is 888 synergist, show high brassin lactones, methyl, plant growth regulator 920, day power 168,885 agricultural chemicals synergists, bacterium worm lid gram a kind of.
The beneficial effect that technical scheme provided by the invention is brought is:
A kind of chance water self-dissolving agricultural polyethylene alcohol film piece of the present invention, it has convenient to use, and is safe and reliable, allows the user cause desinsection (bacterium) agent of poisoning away from meeting, as dichlorvos, orthene, omethoate etc.And not only saved time, but also laborsaving.When discharging soup in the dissolving voluntarily under the effect of polyvinyl alcohol film piece at rainwater, reach desinsection (bacterium), callus corrosion-resistant effect.A kind of chance water self-dissolving agricultural polyethylene alcohol film piece cost of the present invention is low, good disinsection effect, specification requirement is low, to the healthy harmless advantage of user, and can not make agricultural chemicals be splashed to doing on the object that people eat as the atomizers spray soup, and cause residue of pesticide.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below with embodiment of the present invention is described further in detail.
A kind of chance water self-dissolving agricultural polyethylene alcohol film piece of the present invention, its preparation method is carried out according to following steps:
With polyvinyl alcohol 1788 and 1799(18%-68%) mass parts is in different ratios, carry out water-bath and put into homogenizer, heat up between 70-80 degrees centigrade when stirring, again with plasticizer glycerine, it also can be ethylene glycol (0.2%-0.8%) part, slowly and uniformly add, stirring at low speed 10-30 minutes, temperature control is between 80-110 degrees centigrade, treat (can test with iodine liquid after polyvinyl alcohol mixing liquid fully absorbs plasticizer, iodine liquid spreads uniformly, the proof polyvinyl alcohol has fully absorbed plasticizer) add other processing aid again, crosslinking agent Tween 80 (0.3%-0.9%) part, surfactant washing powder also can be washing agent (0.9-1.6%) part, after mixing, because polyvinyl alcohol 1788 is different with 1799 proportioning, make the polyvinyl alcohol film piece (bar) of two kinds of water-soluble speed of difference.
First kind, polyvinyl alcohol 1788 ratios are higher to belong to instant water-soluble solution mixed liquor, in this solution, add different desinsection (bacterium) agent according to different seasons, different floristics, the different damage by disease and insect situation vegetative stages different with plant, reach the needs of administering and preventing and treating the various damage by disease and insect of plant.
Second kind, the ratio of polyvinyl alcohol 1799 is higher relatively belong to instant and in the water-soluble solution mixed liquor of a kind of transition between molten, dissolving speed is more slow than first kind, and is faster again than speed molten in the polyvinyl alcohol.In this mix polyethylene alcoholic solution, add trace element with according to the different plant growth regulator of floristic different interpolations.With after reaching the first film piece (bar) dissolving and killing worm (bacterium), it is anticorrosion that second film plays callus to the wound of plant, and increase the effect of nutrient.
In order to realize mass production, the present invention can also get with extruder co-extrusion material blow once-through moulding.Two extruders in parallel, use polyvinyl alcohol mixing raw material and processing aid Recipe (to comprise the desinsection microbial inoculum by the water-soluble speed difference of setting of beginning, trace element, the plant growth regulator difference) raw material of two extruders is through entering two production lines that draw after plastifying, adopt A/B/A or A/B/C structure hot melt compound disposable blowing film forming piece (bar), this film has the film of the different water-soluble speed of two parts to be formed, and water-soluble time started of each several part and speed are according to (floristics, the damage by disease and insect situation, the plant growing state) predefined desinsection (bacterium), the anticorrosion two kinds of different water-soluble speed of wound healing.By the width of design, length separates (density in hole, diameter are convenient to be torn by hand and are advisable) through the puncher punching.In use be convenient to select according to different floristics, different damage by disease and insect situations, different plant growing states the film piece (bar) of the micro-and different plant growth regulator of the desinsection (bacterium) of different formulations, different formulations.Namely entomogenous fungi is killed in easily molten part dissolving earlier earlier; In dissolve after the molten part, carry out wound healing and conditioning again, prolonged the fertilizer efficiency period of little fertilizer, noresidue, the soil that do not harden can be facilitated soil aggregate, increases gas permeability, water penetration and moisture capacity; After the wound healing, growing power is strong, can not be subjected to the position synchronous growth of hindering with other, and the diseases prevention performance is good, has solved the repeatedly difficult problem of fertilising, dispenser.Above manufacture craft is of the present invention wherein a kind of, is not whole preparation methods.Just present technique is described and further specifies the restriction that can not be interpreted as protection domain of the present invention, the person skilled in the art in this field can make improvement and the adjustment of some unsubstantialities according to foregoing to the present invention.
The present invention in use, have the following advantages: before raining, with polyvinyl alcohol desinsection (bacterium), trace element, conditioning agent film piece (bar) is close on the plant main tree trunk stem, and by rainwater, desinsection (bacterium) film piece (bar) dissolved at 3-30 minutes and dissolves with desinsection (bacterium) agent and moves to plant corpus tree stem, drench in the soil of rhizome, by interior suction conduction or the compound effect of tagging, reach desinsection, the effect of sterilization.At this moment the polyvinyl alcohol film piece (bar) that contains trace element, conditioning agent rains at every turn and melts, and dissolves fully in 20-30 days, and the plant wound is played anticorrosion, the opsonic action of healing.Characteristics are: raised labour efficiency in the proportion of crop planting family; reduce labour intensity; it is far away to have solved carrying water of spray-on process, the difficult problem that laxative is tired, 2, when having solved spraying; the liquid medicine splash is to user's health; protected the healthy of user, 3, when having solved spraying, the liquid medicine spray painting splashes on the crops; avoided residue of pesticide, protected that the eater's is healthy.
According to interrelated data: when the concentration of polyvinyl alcohol in soil reaches 1/1000ths during to one thousandth, polyvinyl alcohol can effectively form the water stability granule, can obviously reduce the soil moisture emission, can increase acidity (faintly acid) soil, can also obviously reduce the leaching loss amount of potassium in the soil.And contain for the second time trace element and plant growth regulator (wherein showing high brassin lactones, methyl etc.) in the film piece (bar) of dissolving and can improve the resist ability of natural calamity and disease of crop; Be subjected at plant corpus under the situation of insect pest, make the present invention in 5-25 centimetres of soil depth, induce injured bottom of plant body to bear Xin Pi and new root system and synchronous growth.On June 18th, 2011 is in coffee ground, Bu Gen stockaded village, the mountain village test of Simao District Yun Xian township, Puer City group.Experimental group 330 strains are when 330 strains paste on the plant mobile jib with polyvinyl alcohol desinsection (bacterium) callus anticorrosion chance water self-dissolving film piece (bar); Control group because to carry water, convert water-soluble solution evenly, laxative, divide three steps to carry out, so just use sprayer, spray liquid 91 strains.When treating that June 21 observed, control group is almost completely the same with the experimental group drug effect, ant and all dead with the parasitic root powder sarcoptic mite of ant.Observed later in 20 days, the growing way of experimental group is better than control group slightly, and this moment, little fertilizer played a role; Observed later in 30 days, the wound grows the soft hymeniderm of one deck (skin is very thin), but also can play the growth of protection wound healing tissue, and the anti-infection process that rots, rainwater are invaded and prevented the effect that wound is dry and cracked, and this moment, plant growth regulator played a role.According to for information about, Yunnan Province's arabiancoffee cultivated area is 91.974 ten thousand mu, and wherein the Puer City cultivated area is 43.7925 ten thousand mu.Generally entering adult coffee tree after the 5 years point that all will break every year handles and (cuts off top with scissors; allow it increase result quantities to growth all around); at this moment worm such as gelechiid inhales myron; revolve the skin longicorn and can in the pith, get a tunnel; clean a wound with bordeaux mixture or carbendazim this moment; after wound is done, (bacterium) agent of polyvinyl alcohol desinsection and the anticorrosion chance water of callus self-dissolving film piece (bar) in the stickup, effect is better.
As long as make good use of after rainy " time difference ", also can carry out desinsection (bacterium) with the present invention away from the place at water source, as gardens, fruit-bearing forest, coffee, banana, rubber, tea tree etc.Add man-hour, with the polyvinyl alcohol bath water heating of different proportionings, insert processing aid earlier, produce mixed liquor, mixed liquor has two kinds of different water-soluble speed, and (instant poly-vinyl alcohol solution adds the desinsection microbial inoculum; Instant and in excessive solution between molten add trace element and plant growth regulator) again at different crops, different pest species, add the different former medicines of desinsection (bacterium), or trace element and plant growth regulator sneak into polyvinyl alcohol mixing liquid, forming with the compacting of film tool again.Shape can be block, granular, also can the adhesive bandage shape.Two film pieces (two film pieces that namely contain different former medicines) of different dissolution velocities can link to each other, and also can be independently.
In use, through observing for a long time, throughout the year in, winter, the damage by disease and insect odds was fewer, entered after spring, along with the rise of temperature, the damage by disease and insect odds also increases thereupon.April, often there are occasional drizzles to occur before and after season in grain rains, after making good use of rainy " time difference ", desinsection (bacterium) film piece and trace element/plant growth regulator film piece are sticked on the main trunk (cane) as adhesive bandage, when raining, be desinsection (bacterium) the agent film piece dissolving earlier of carrier with instant polyvinyl alcohol, carry former medicine solution transfer during dissolving to setting on the bar, drench again to tree root, administer the damage by disease and insect of plant; Then with instant and in the polyvinyl alcohol of molten excessive dissolution speed be that trace element, the plant growth regulator film piece of carrier slowly dissolves, a following rainfall dissolving part up to dissolving fully, plays the callus antisepsis of crop.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. meet water self-dissolving agricultural polyethylene alcohol film piece for one kind, its constituent according to part by weight is: hydrophilic polyvinyl alcohol 18%-68%, trace element 26%-38%, insecticidal bactericide 40%-78%, plant growth regulator 9%-18%, Tween 80 crosslinking agent 0.3%-0.9%, plasticizer 0.2%-0.8%, surfactant 0.9%-1.6%.
2. a kind of chance water self-dissolving agricultural polyethylene alcohol film piece according to claim 1 is characterized in that described polyvinyl alcohol is that the degree of polymerization is 1700, and alcoholysis degree is one or both combinations of 88%-99%.
3. a kind of chance water self-dissolving agricultural polyethylene alcohol film piece according to claim 1 is characterized in that described trace element is one or more of Peng, Magnesium, zinc.
4. a kind of chance water self-dissolving agricultural polyethylene alcohol film piece according to claim 1 is characterized in that described insecticidal bactericide is a kind of of bordeaux mixture, carbendazim, thiophanate methyl, copper oxide or omethoate.
5. a kind of chance water self-dissolving agricultural polyethylene alcohol film piece according to claim 1, it is characterized in that, described plant growth regulator is 888 synergist, show high brassin lactones, methyl, plant growth regulator 920, day power 168,885 agricultural chemicals synergists, bacterium worm lid gram a kind of.
6. a kind of chance water self-dissolving agricultural polyethylene alcohol film piece according to claim 1 is characterized in that described plasticizer is glycerine or phthalic acid fat, and described surfactant is that washing powder also can be washing agent.
7. preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece may further comprise the steps:
A, with 1788 water-baths of hydrophilic polyvinyl alcohol and put into homogenizer, be warming up in the time of stirring between 70 degrees centigrade-80 degrees centigrade;
B, plasticizer glycerine or ethylene glycol slowly and are uniformly added, stirred 10-30 minutes, temperature is controlled between 80 degrees centigrade-110 degrees centigrade, treats that polyvinyl alcohol mixing liquid fully absorbs plasticizer;
C, adding crosslinking agent Tween 80, surfactant washing powder or washing agent;
D, adding insecticide or bactericide mix, and are pressed into the polyvinyl alcohol film piece by mould.
8. preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece may further comprise the steps:
A, with 1799 water-baths of hydrophilic polyvinyl alcohol and put into homogenizer, be warming up in the time of stirring between 70 degrees centigrade-80 degrees centigrade;
B, plasticizer glycerine or ethylene glycol slowly and are uniformly added, stirred 10-30 minutes, temperature is controlled between 80 degrees centigrade-110 degrees centigrade, treats that polyvinyl alcohol mixing liquid fully absorbs plasticizer;
C, adding crosslinking agent Tween 80, surfactant washing powder or washing agent;
D, adding trace element and plant growth regulator mix, and are pressed into the polyvinyl alcohol film piece by mould.
9. a kind of preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece according to claim 7 is characterized in that described insecticide is a kind of of bordeaux mixture, carbendazim, thiophanate methyl, copper oxide or omethoate.
10. a kind of preparation method of meeting water self-dissolving agricultural polyethylene alcohol film piece according to claim 8, it is characterized in that, described trace element is one or more of Peng, Magnesium, zinc, described plant growth regulator is 888 synergist, show high brassin lactones, methyl, plant growth regulator 920, day power 168,885 agricultural chemicals synergists, bacterium worm lid gram a kind of.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3844130A4 (en) * | 2018-08-27 | 2022-05-18 | Syngenta Crop Protection AG | Fertilizer pouch |
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| CN1248400A (en) * | 1999-10-27 | 2000-03-29 | 张格尔 | Low toxicity active colloidal plant protective agent |
| CN2461296Y (en) * | 2001-01-10 | 2001-11-28 | 陈书侗 | Sterilizing articles |
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Application publication date: 20130911 |