CN105399522A - Preparation method for chitosan starch coated controlled-release fertilizer - Google Patents
Preparation method for chitosan starch coated controlled-release fertilizer Download PDFInfo
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- CN105399522A CN105399522A CN201510920286.XA CN201510920286A CN105399522A CN 105399522 A CN105399522 A CN 105399522A CN 201510920286 A CN201510920286 A CN 201510920286A CN 105399522 A CN105399522 A CN 105399522A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F1/00—Fertilisers made from animal corpses, or parts thereof
- C05F1/005—Fertilisers made from animal corpses, or parts thereof from meat-wastes or from other wastes of animal origin, e.g. skins, hair, hoofs, feathers, blood
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a preparation method for chitosan starch coated controlled-release fertilizer, which belongs to the field of preparation of fertilizer. The preparation method is simple and easy to operate; and the prepared coated controlled-release fertilizer has the characteristics of an inoranic membrane material and the advantages of an organic membrane material and overcomes the problem that single organic or inorganic material coated fertilizer is not applicable to growth of field crops due to too-short or too-long controlled release time.
Description
Technical field
The present invention relates to a kind of preparation method of chitosan starch coated slow release fertilizer, belong to fertilizer preparation field.
Background technology
China is a large agricultural country, and populous cultivated area is few, will produce more grain on limited soil, and using in a large number of fertilizer is inevitable.Fertilizer is the important leverage of increases in grain production, is " grain of grain ".Practice both domestic and external also proves, in all Factor for increasing outputs, only has rate of fertilizer application and grain yield linearly relevant (R=0.9431).The analysis of Food and Argriculture OrganizationFAO is pointed out, in the world today, the contribution rate of chemical fertilizer to increases in grain production accounts for 50%.Along with the popularization of higher yield of crops kind, grain will be increasing to the dependency of fertilizer.China uses the arable land of in the world 9%, and supported the population of 22% in the world, its major reason is China's fertilizer of about 1/3 in the world, is also the most maximum country of applying fertilizer in the world.
The utilization ratio of China's chemical fertilizer is low, and especially the loss of nitrogenous fertilizer is serious, and the utilising efficiency of chemical fertilizer is on a declining curve.According to the many experimental results analysis of China, this season utilization ratio of China's chemical fertilizer, nitrogen is about 30-35%, and phosphorus is about 10-20%, and potassium is about 35-50%.The wherein loss especially severe of nitrogenous fertilizer, nonirrigated farmland is about 35-40%, paddy field can reach 50%, calculate with average loss 45%, the annual applied nitrogen of China 2,000 ten thousand tons (calculating by purity nitrogen), loses 9,000,000 tons, is equivalent to more than 1,900 ten thousand tons of urea, amount to Renminbi about 26,600,000,000 yuan, this numeral is startling.
The utilization ratio of fertilizer reduces with the raising of rate of fertilizer application, more and more higher rate of fertilizer application, although the ultimate production that can increase grain, because the utilization ratio of fertilizer significantly reduces, plant husbandry benefit obviously declines, and has a strong impact on the income of peasant.Moreover, high rate of fertilizer application can cause soil nutrient superfluous, and nutrient runs off along with rainwater, accelerates lake eutrophication and ecological imbalance, exacerbates the pollution of environment.If adopt fertilising new technology to make utilization rate of nitrogen fertilizer improve 15%, be equivalent to the urea of saving about 30%, the loss of nearly 8,000,000,000 yuan can be retrieved.Therefore, science balance fertilizing, to improve utilization rate of fertilizer particularly important to such fertilizer consumption big country of China.
Coated fertilizer is a type of slowly/controlled releasing fertilizer, can be divided into inorganic coating fertilizer and organic coated fertilizer by the character of mould material; The existing sulphur coated urea of inorganic coating fertilizer, the clay mineral coated fertilizer such as (diatomite, kaolin, potter's clay clay mineral), also have the slow release fertilizer etc. that fused(calcium magnesium)phosphate coating bicarbonate of ammonia is made.Organic coated fertilizer mainly refers to polymer coated fertilizer.Inorganic coating fertilizer general cost is lower, pollution-free but controlled release period is shorter, the controlled release period of organic coated fertilizer is long, but cost is high, use in a large number and may bring risk to edatope, and they are all unsuitable for the field crop that corn, wheat etc. are 6-8 month vegetative period.
Summary of the invention
Technical problem solved by the invention, low for current common fertilizer utilization ratio, fertilizer efficiency release rapidly can not the defect of onset completely, a kind of preparation method of chitosan starch coated slow release fertilizer is provided, this preparation method is simple, easy to operate, and the characteristic that prepared coated slow release fertilizer has an inorganic material film has again the advantage of organic film material, solves the too short or long problem being unsuitable for field crop growth of organic or inorganic material coated fertilizer slow-release time single at present.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) take 2 ~ 3kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 30 ~ 40 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 500 ~ 600mL edible white vinegar, be heated to 100 ~ 110 DEG C, take out after boiling 30 ~ 50min, put into baking oven, at 100 ~ 105 DEG C, dry 1 ~ 2h, for subsequent use;
(2) the leftovers leftovers left in 2 ~ 3kg dining room are got, put into fermentor tank, add the glucose solution that 50 ~ 100mL mass concentration is 30% inwards, then get 3 ~ 5 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 200 ~ 300mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 35 ~ 45 DEG C of bottom fermentations 1 ~ 2 week, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use;
(3) mouldy sweet potato, potato are put into micronizer mill and pulverized, obtain sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 2 ~ 3 weeks, obtain dry mixed powder;
(4) by above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour in 3L beaker together, add the tealeaves that 300 ~ 400mL washing water of rice and 10 ~ 15g steeped, again beaker is placed in strong mixer, stir with the rotating speed of 800 ~ 900r/min, obtain mixture;
(5) 10 ~ 20g chitosan is taken, 10 ~ 20g W-Gum is poured in 500mL beaker together, continue to add 2 ~ 5g gelatin and 200 ~ 300mL polyvinyl alcohol, 30 ~ 40min is stirred with the rotating speed of 700 ~ 800r/min with high speed agitator, put into concentration tank, reduce pressure to 1200 ~ 1300Pa, be condensed into thickness coating liquid; (6) above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 80 ~ 90 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Beneficial effect of the present invention: the method for preparing fertilizer that the present invention prepares is simple, easy to operate, and the characteristic that prepared composite coated slow-released fertilizer has an inorganic material film has again the advantage of organic film material, solve the too short or long problem being unsuitable for field crop growth of organic or inorganic material coated fertilizer slow-release time single at present.
Embodiment
Take 2 ~ 3kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 30 ~ 40 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 500 ~ 600mL edible white vinegar, be heated to 100 ~ 110 DEG C, take out after boiling 30 ~ 50min, put into baking oven, at 100 ~ 105 DEG C, dry 1 ~ 2h, for subsequent use; Get the leftovers leftovers left in 2 ~ 3kg dining room, put into fermentor tank, add the glucose solution that 50 ~ 100mL mass concentration is 30% inwards, then get 3 ~ 5 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 200 ~ 300mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 35 ~ 45 DEG C of bottom fermentations 1 ~ 2 week, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use; Mouldy sweet potato, potato are put into micronizer mill and pulverized, obtains sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 2 ~ 3 weeks, obtain dry mixed powder; By above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour in 3L beaker together, add the tealeaves that 300 ~ 400mL washing water of rice and 10 ~ 15g steeped, again beaker is placed in strong mixer, stir with the rotating speed of 800 ~ 900r/min, obtain mixture; Take 10 ~ 20g chitosan, 10 ~ 20g W-Gum is poured in 500mL beaker together, continue to add 2 ~ 5g gelatin and 200 ~ 300mL polyvinyl alcohol, 30 ~ 40min is stirred with the rotating speed of 700 ~ 800r/min with high speed agitator, put into concentration tank, reduce pressure to 1200 ~ 1300Pa, be condensed into thickness coating liquid; Above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 80 ~ 90 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Example 1
Take 2kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 30 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 500mL edible white vinegar, be heated to 100 DEG C, take out after boiling 30min, put into baking oven, at 100 DEG C, dry 1h, for subsequent use; Get the leftovers leftovers left in 2kg dining room, put into fermentor tank, add the glucose solution that 50mL mass concentration is 30% inwards, then get 3 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 200mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 35 DEG C of bottom fermentations 1 week, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use; Mouldy sweet potato, potato are put into micronizer mill and pulverized, obtains sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 2 weeks, obtain dry mixed powder; By above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour into together in 3L beaker, add the tealeaves that 300mL washing water of rice and 10g steeped, then beaker is placed in strong mixer, stir with the rotating speed of 800r/min, obtain mixture; Take 10g chitosan, 10g W-Gum is poured in 500mL beaker together, continues to add 2g gelatin and 200mL polyvinyl alcohol, 30min is stirred with the rotating speed of 700r/min with high speed agitator, put into concentration tank, reduce pressure to 1200Pa, be condensed into thickness coating liquid; Above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 80 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Example 2
Take 3kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 35 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 550mL edible white vinegar, be heated to 108 DEG C, take out after boiling 40min, put into baking oven, at 103 DEG C, dry 1h, for subsequent use; Get the leftovers leftovers left in 2kg dining room, put into fermentor tank, add the glucose solution that 80mL mass concentration is 30% inwards, then get 4 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 250mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 40 DEG C of bottom fermentations 1 week, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use; Mouldy sweet potato, potato are put into micronizer mill and pulverized, obtains sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 2 weeks, obtain dry mixed powder; By above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour into together in 3L beaker, add the tealeaves that 350mL washing water of rice and 13g steeped, then beaker is placed in strong mixer, stir with the rotating speed of 850r/min, obtain mixture; Take 15g chitosan, 15g W-Gum is poured in 500mL beaker together, continues to add 4g gelatin and 250mL polyvinyl alcohol, 35min is stirred with the rotating speed of 750r/min with high speed agitator, put into concentration tank, reduce pressure to 1250Pa, be condensed into thickness coating liquid; Above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 85 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Example 3
Take 3kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 40 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 600mL edible white vinegar, be heated to 110 DEG C, take out after boiling 50min, put into baking oven, at 105 DEG C, dry 2h, for subsequent use; Get the leftovers leftovers left in 3kg dining room, put into fermentor tank, add the glucose solution that 100mL mass concentration is 30% inwards, then get 5 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 300mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 45 DEG C of bottom fermentations 2 weeks, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use; Mouldy sweet potato, potato are put into micronizer mill and pulverized, obtains sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 3 weeks, obtain dry mixed powder; By above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour in 3L beaker together, add the tealeaves that 400mL washing water of rice and 10 ~ 15g steeped, again beaker is placed in strong mixer, stir with the rotating speed of 900r/min, obtain mixture; Take 20g chitosan, 20g W-Gum is poured in 500mL beaker together, continues to add 5g gelatin and 300mL polyvinyl alcohol, 40min is stirred with the rotating speed of 800r/min with high speed agitator, put into concentration tank, reduce pressure to 1300Pa, be condensed into thickness coating liquid; Above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 90 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Claims (1)
1. a preparation method for chitosan starch coated slow release fertilizer, is characterized in that concrete preparation process is:
(1) take 2 ~ 3kg meat packing plant and discard the Os Sus domestica left over, put into aggregate pulverizer, cross 30 ~ 40 mesh standard sieves after pulverizing, obtain bone fragments, the bone fragments obtained is put into pot, add 500 ~ 600mL edible white vinegar, be heated to 100 ~ 110 DEG C, take out after boiling 30 ~ 50min, put into baking oven, at 100 ~ 105 DEG C, dry 1 ~ 2h, for subsequent use;
(2) the leftovers leftovers left in 2 ~ 3kg dining room are got, put into fermentor tank, add the glucose solution that 50 ~ 100mL mass concentration is 30% inwards, then get 3 ~ 5 eggs, join in ceramic fermentor tank after breaking into pieces, continue to add 200 ~ 300mL distilled water, after stirring with glass stick, sealed can mouth, is placed on 35 ~ 45 DEG C of bottom fermentations 1 ~ 2 week, after having fermented, fermented product is filtered removal filtrate and obtain filter residue, for subsequent use;
(3) mouldy sweet potato, potato are put into micronizer mill and pulverized, obtain sweet potato, potato mixed powder, be exposed to the sun under placing it in burning sun 2 ~ 3 weeks, obtain dry mixed powder;
(4) by above-mentioned obtained Os Sus domestica powder end, fermentation filter residue and dry mixed powder in mass ratio for 2:3:2 mixes, pour in 3L beaker together, add the tealeaves that 300 ~ 400mL washing water of rice and 10 ~ 15g steeped, again beaker is placed in strong mixer, stir with the rotating speed of 800 ~ 900r/min, obtain mixture;
(5) 10 ~ 20g chitosan is taken, 10 ~ 20g W-Gum is poured in 500mL beaker together, continue to add 2 ~ 5g gelatin and 200 ~ 300mL polyvinyl alcohol, 30 ~ 40min is stirred with the rotating speed of 700 ~ 800r/min with high speed agitator, put into concentration tank, reduce pressure to 1200 ~ 1300Pa, be condensed into thickness coating liquid;
(6) above-mentioned obtained mixture is poured in thickness coating liquid, filters to obtain solid filtering thing after stirring with glass stick, put it in rotatory evaporator, be warming up to 80 ~ 90 DEG C, revolve evaporate to dryness dry after namely obtain a kind of chitosan starch coated slow release fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920286.XA CN105399522A (en) | 2015-12-12 | 2015-12-12 | Preparation method for chitosan starch coated controlled-release fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510920286.XA CN105399522A (en) | 2015-12-12 | 2015-12-12 | Preparation method for chitosan starch coated controlled-release fertilizer |
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| CN105399522A true CN105399522A (en) | 2016-03-16 |
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| CN201510920286.XA Pending CN105399522A (en) | 2015-12-12 | 2015-12-12 | Preparation method for chitosan starch coated controlled-release fertilizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935725A (en) * | 2017-12-17 | 2018-04-20 | 李巧珍 | A kind of preparation method of environment-protection type coated water soluble fertilizer |
| CN108658673A (en) * | 2018-06-27 | 2018-10-16 | 安徽瑞然生物药肥科技有限公司 | A kind of coated fertilizer and preparation method thereof for slow release fertilizer |
| CN113548924A (en) * | 2021-07-23 | 2021-10-26 | 董晓堂 | Animal bone chelated calcium fertilizer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229985A (en) * | 2007-01-22 | 2008-07-30 | 烟台昊峰有机肥料有限公司 | Chitosan coated controlled release fertilizers and preparation method thereof |
| CN102060576A (en) * | 2009-11-18 | 2011-05-18 | 周皓 | Flower fertilizer |
-
2015
- 2015-12-12 CN CN201510920286.XA patent/CN105399522A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229985A (en) * | 2007-01-22 | 2008-07-30 | 烟台昊峰有机肥料有限公司 | Chitosan coated controlled release fertilizers and preparation method thereof |
| CN102060576A (en) * | 2009-11-18 | 2011-05-18 | 周皓 | Flower fertilizer |
Non-Patent Citations (1)
| Title |
|---|
| 王晶等: "淀粉／壳聚糖／聚乙烯醇／明胶共混膜的制备及表征", 《材料导报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935725A (en) * | 2017-12-17 | 2018-04-20 | 李巧珍 | A kind of preparation method of environment-protection type coated water soluble fertilizer |
| CN108658673A (en) * | 2018-06-27 | 2018-10-16 | 安徽瑞然生物药肥科技有限公司 | A kind of coated fertilizer and preparation method thereof for slow release fertilizer |
| CN113548924A (en) * | 2021-07-23 | 2021-10-26 | 董晓堂 | Animal bone chelated calcium fertilizer |
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