CN1544395A - Fertilizer envelop liquid production method - Google Patents
Fertilizer envelop liquid production method Download PDFInfo
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- CN1544395A CN1544395A CNA2003101051002A CN200310105100A CN1544395A CN 1544395 A CN1544395 A CN 1544395A CN A2003101051002 A CNA2003101051002 A CN A2003101051002A CN 200310105100 A CN200310105100 A CN 200310105100A CN 1544395 A CN1544395 A CN 1544395A
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Abstract
The invention relates to a process for preparing fertilizer enveloping liquid comprising the steps of, mixing polyvinyl alcohol with starch, modifying property by charging carbamide, mixing with diatomaceous soil or zeolite powder or bentonite clay of a finite proportion, thus the enveloping liquid can be obtained. The enveloping film made from the enveloping liquid has good permeability and strong tenacity, the enveloped fertilizer has rather strong fertilizer preserving effect and fertilizer supplying capability.
Description
Technical field
The invention belongs to a kind of manufacture method of fertilizer coating liquid.
Background technology in recent years, the reality of low at utilization rate of fertilizer both at home and abroad, agrochemicals pollution of ecological environment from the angle that soil science, fertilizer science, environmental science combine, has been carried out the coated slow release fertilizer development.Existing high polymer film-coated fertilizer, its coated fertilizer is some high molecular polymers, cost an arm and a leg, complex manufacturing, cause the coated fertilizer price be the general fertilizers price 5-6 doubly, even can only be applied in abroad on the higher crop of part paddy field and some economic worths, be difficult to large scale application.The patent of external relevant high polymer film-coated fertilizer is a lot, and for example English Patent (GB2011367A) discloses a kind of coated granular fertilizer and production method thereof, and its coating liquid is to be made of polyolefine or vinyl resins.Japanese Patent (1279683,1985) special permission discloses a kind of overlay film fertilizer and method for making thereof, is made up of with vinyl acetate copolymer and talcum powder polyolefine or ethene.U.S.'s material as coated fertilizer in the patent of polymer coated fertilizer mainly contains: with the wax of toluene and vitriolization rosin gained, the multipolymer of ethene and methacrylic acid, the multipolymer of Synolac and unsaturated grease, polyureas carbamate and isocyanic ester etc.Carry out discharging again in the fertilizer coating production process a large amount of benzene classes and the hazardous solvent of chloride ion-containing, contaminate environment with these high molecular polymers.The more important thing is, after this type of coated fertilizer nutrient discharges totally, remain in the slowly not even degraded of high polymer film-coated mass degradation in the soil, can destroy Soil structure if things go on like this, crop growth is caused adverse influence.And existing inorganics or inorganic mineral coated fertilizer shortcoming are that controlled-release effect is poor, nutrient content is low, for example patent (CN1137031A) discloses a kind of slow release fertilizer and method for making thereof, utilize inorganic minerals such as pearlstone as coated fertilizer, coated fertilizer accounts for the 20-80% of fertilizer heart nuclear weight; In addition, labour intensity is big in the application, adds that controlled-release effect is poor, goes up the area popularization not quite so produce.
Summary of the invention
It is good that purpose of the present invention is sought a kind of nutrient controlled-release effect exactly, and the coated fertilizer wide material sources are with low cost, the environment-protection type coated slow release fertilizer of environmentally safe in production and application.
The objective of the invention is to be achieved through the following technical solutions:
The composition and the part by weight of coating liquid are as follows:
Polyvinyl alcohol 5-10, water-disintegrable starch 3-5, urea 0.2-1.2, diatomite or zeolite powder or bentonite 4-6, distilled water 77.8-87.8;
The preparation method of coating liquid is as follows:
With part by weight is that the polyvinyl alcohol of 5-10 and water-disintegrable starch that part by weight is 3-5 are put into the still that part by weight is a 77.8-87.8 water is housed, and stirs, and is heated to 90-99 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add the urea that part by weight is 0.2-1.2 again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add diatomite that 100 order part by weight are 4-6 or zeolite powder or bentonite powder and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.
The beneficial effect that the present invention brings:
1. fertilizer control release is effective, suppresses the nutrient stripping in the paddy field, and it is obvious to reduce the nitrogen volatilization effect, and the raising utilization rate of fertilizer is 10-20%.
2. starting material wide material sources, cost are low.Fertilizer coating material cost per ton only is a 150-200 unit.Reduce the cost of coated fertilizer greatly.
3. simple, coating liquid production of coating liquid synthetic technology and fertilizer coating process are pollution-free to surrounding environment; In addition, selected coating material through can broken voluntarily, degraded after 100 days, can not cause secondary pollution to edatope in soil.
Embodiment
Embodiment 1
10 gram polyvinyl alcohol and the water-disintegrable starch of 5 grams are put into the still that 77.8 gram water are housed, stir, be heated to 95 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add urea 0.85 gram again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add 100 purpose diatomite powders, 5 grams, and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.Then coating liquid is layed onto on the granulated fertilizer.
Embodiment 2
8 gram polyvinyl alcohol and the water-disintegrable starch of 4 grams are put into the still that 83.5 gram water are housed, stir, be heated to 90 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add urea 0.4 gram again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add 100 purpose zeolite powders, 4 grams, and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.Then coating liquid is layed onto on the granulated fertilizer.
Embodiment 3
5 gram polyvinyl alcohol and the water-disintegrable starch of 3 grams are put into the still that 87.8 gram water are housed, stir, be heated to 98 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add urea 0.25 gram again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add 100 purpose bentonite powder, 4 grams, and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.Then coating liquid is layed onto on the granulated fertilizer.
Embodiment 4
10 gram polyvinyl alcohol and the water-disintegrable starch of 3 grams are put into the still that 82 gram water are housed, stir, be heated to 94 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add urea 1 gram again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add 100 purpose diatomite powders, 4 grams, and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.Then coating liquid is layed onto on the granulated fertilizer.
The coated fertilizer nutrient that the present invention makes is released the control effect:
CK is coated fertilizer not, and PGg is polyvinyl alcohol, starch and diatomite mixed solution coated fertilizer, and PGf is polyvinyl alcohol, starch and zeolite powder mixed solution coated fertilizer, has done lab simulation evaluation test and crop pot experiment respectively.Main Conclusions is as follows:
1, the saturating property of nutrient ion test
N amount fertilizer sample 5 grams such as take by weighing, immerses in 20 times of distilled water, after 35 ℃ of following constant temperature soak 24h, NH in the mensuration leach liquor
4 +-N content.Simultaneously, other gets identical coating, coated fertilizer not, measures its NH
4 +The content of-N.Calculate the nutrient solubility rate with following formula,
The NH of PGg, PGf coated fertilizer
4 +The stripping quantity of-N has reduced by 67.8%, 86.1% than CK, illustrates that the stripping to nutrient has the obvious suppression effect behind the fertilizer coating.
2, nitrogen volatilization test
Test is at room temperature carried out, and takes by weighing the fertilizer that waits N to measure, and with the soil mixing, is 1.35g cm by the soil weight
-3Pack into equably in the basin.The soil consumption is the 4kg/ bucket, is typical brown earth for examination soil.Add the moistening soil of distilled water of equivalent to each basin, bung seals with plastics film, and duration of test does not rewater.After on-test, gather the gas in the enclosed space in the bucket on the 5th, 10,15,20,30,40 day, measure NH in the gas
3And NO
XContent.Test-results shows that coated fertilizer all has the obvious suppression effect to the volatilization of nitrogen.PGg, PGf compare with CK, and the nitrogen volatilization total amount has reduced 26% and 19.3% respectively.
3, upland rice manure trial
Upland rice variety is No. 1, venezuelan.Test used soil and be that brown earth was done 5 mesh sieves behind natural wind standby, every basin is adorned native 10kg (wind desiceted soil).The fertilizer amount of coating of the present invention is identical.With fertilizer and test fully mixing of soil, dress basin.Duration of test quantitatively waters.Test in sowing on July 29th, 2002, the every basin of upland rice 4 caves, 8 of every bunch plantings.The week back thinning of emerging is 4 strains/cave.Test in end of day in October 19.Utilization rate of nitrogen fertilizer is meant that crop absorbs the percentage that the quantity of nitrogen in the fertilizer accounts for the total amount of using nitrogen.Calculate the utilization rate of fertilizer that each is handled with differential technique, calculation formula is as follows:
The utilization ratio ratio of PGg, two kinds of coated fertilizers of PGf not coated fertilizer exceeds 20%, 16% respectively.
Claims (1)
1. the manufacture method of a fertilizer coating liquid, it is characterized in that: with part by weight is that the polyvinyl alcohol of 5-10 and water-disintegrable starch that part by weight is 3-5 are put into the still that part by weight is a 77.8-87.8 water is housed, stir, be heated to 90-99 ℃, insulation reaction 1 hour; After waiting to reduce to room temperature, add the urea that part by weight is 0.2-1.2 again, be sealed in 45 ℃ of following oscillatory reactions 3 hours; And then add diatomite that 100 order part by weight are 4-6 or zeolite powder or bentonite powder and be heated to 60 ℃, stirred 30 minutes, promptly get coating liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105100 CN1219731C (en) | 2003-11-14 | 2003-11-14 | Fertilizer envelop liquid production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105100 CN1219731C (en) | 2003-11-14 | 2003-11-14 | Fertilizer envelop liquid production method |
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| Publication Number | Publication Date |
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| CN1544395A true CN1544395A (en) | 2004-11-10 |
| CN1219731C CN1219731C (en) | 2005-09-21 |
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|---|---|---|---|
| CN 200310105100 Expired - Fee Related CN1219731C (en) | 2003-11-14 | 2003-11-14 | Fertilizer envelop liquid production method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384788C (en) * | 2006-10-19 | 2008-04-30 | 刘俊松 | Nitrogen, phosphorus, potassium high content controlled release composite fertilizer special for cotton and its preparation method |
| CN100384789C (en) * | 2006-10-19 | 2008-04-30 | 刘俊松 | Control release composite fertilizer special for cotton and its preparation method |
| CN100469740C (en) * | 2007-04-17 | 2009-03-18 | 刘俊松 | Special release control composite fertilizer for cole and preparation method thereof |
| CN102020517A (en) * | 2010-08-25 | 2011-04-20 | 国际竹藤网络中心 | Slow release fertilizer and preparation method thereof |
| CN105061054A (en) * | 2015-08-06 | 2015-11-18 | 中国农业科学院烟草研究所 | Coated sustained-release fertilizer and production method thereof |
| JP2015229601A (en) * | 2014-06-03 | 2015-12-21 | コニカミノルタ株式会社 | Fertilizer particle and production method thereof |
| JP2015229600A (en) * | 2014-06-03 | 2015-12-21 | コニカミノルタ株式会社 | Fertilizer particle and production method thereof |
| CN105399504A (en) * | 2015-11-25 | 2016-03-16 | 高青山 | Special environment-friendly low-pesticide-residue fertilizer for high yield of lotus roots |
| CN105399508A (en) * | 2015-11-25 | 2016-03-16 | 高青山 | Special environment-friendly fertilizer for high yield of lotus roots |
| CN105418304A (en) * | 2015-11-25 | 2016-03-23 | 高青山 | Organic-inorganic compound fertilizer special for green and high-yield lotus roots |
| CN105660093A (en) * | 2015-12-31 | 2016-06-15 | 广西鑫华农业科技股份有限公司 | Ginger high-quality high-yield plantation method |
-
2003
- 2003-11-14 CN CN 200310105100 patent/CN1219731C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384788C (en) * | 2006-10-19 | 2008-04-30 | 刘俊松 | Nitrogen, phosphorus, potassium high content controlled release composite fertilizer special for cotton and its preparation method |
| CN100384789C (en) * | 2006-10-19 | 2008-04-30 | 刘俊松 | Control release composite fertilizer special for cotton and its preparation method |
| CN100469740C (en) * | 2007-04-17 | 2009-03-18 | 刘俊松 | Special release control composite fertilizer for cole and preparation method thereof |
| CN102020517A (en) * | 2010-08-25 | 2011-04-20 | 国际竹藤网络中心 | Slow release fertilizer and preparation method thereof |
| CN102020517B (en) * | 2010-08-25 | 2013-03-06 | 国际竹藤网络中心 | Slow release fertilizer and preparation method thereof |
| JP2015229601A (en) * | 2014-06-03 | 2015-12-21 | コニカミノルタ株式会社 | Fertilizer particle and production method thereof |
| JP2015229600A (en) * | 2014-06-03 | 2015-12-21 | コニカミノルタ株式会社 | Fertilizer particle and production method thereof |
| CN105061054A (en) * | 2015-08-06 | 2015-11-18 | 中国农业科学院烟草研究所 | Coated sustained-release fertilizer and production method thereof |
| CN105061054B (en) * | 2015-08-06 | 2018-04-03 | 中国农业科学院烟草研究所 | A kind of coating slow-release or control-release fertilizer and its manufacture method |
| CN105399504A (en) * | 2015-11-25 | 2016-03-16 | 高青山 | Special environment-friendly low-pesticide-residue fertilizer for high yield of lotus roots |
| CN105399508A (en) * | 2015-11-25 | 2016-03-16 | 高青山 | Special environment-friendly fertilizer for high yield of lotus roots |
| CN105418304A (en) * | 2015-11-25 | 2016-03-23 | 高青山 | Organic-inorganic compound fertilizer special for green and high-yield lotus roots |
| CN105660093A (en) * | 2015-12-31 | 2016-06-15 | 广西鑫华农业科技股份有限公司 | Ginger high-quality high-yield plantation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1219731C (en) | 2005-09-21 |
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Granted publication date: 20050921 Termination date: 20101114 |