CN112898087A - Slow-release compound fertilizer and preparation method thereof - Google Patents
Slow-release compound fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN112898087A CN112898087A CN202110141713.XA CN202110141713A CN112898087A CN 112898087 A CN112898087 A CN 112898087A CN 202110141713 A CN202110141713 A CN 202110141713A CN 112898087 A CN112898087 A CN 112898087A
- Authority
- CN
- China
- Prior art keywords
- parts
- compound fertilizer
- slow
- edta
- release compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- 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
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/14—Tablets, spikes, rods, blocks or balls
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a slow-release compound fertilizer which comprises the following components in parts by weight: 40-60 parts of sepiolite, 500 parts of urea, 300 parts of ammonium dihydrogen phosphate, 400 parts of potassium chloride, 10-30 parts of calcium powder, 5-15 parts of borax and 5-10 parts of trace elements. The invention also provides a preparation method of the slow-release compound fertilizer. The slow release compound fertilizer can solve the problems of common compound fertilizers in the following aspects: 1. by increasing the particle size of the compound fertilizer and the physical properties of the particle density, the solubility of the compound fertilizer is slowed down and the leaching loss of rainwater is reduced. 2. By adding trace elements such as calcium and boron and chelated magnesium, zinc, copper, molybdenum, iron and manganese, the fertilizer efficiency of the compound fertilizer can be improved through the synergistic effect of multiple elements. 3. By adding natural sepiolite as a carrier, the compound fertilizer is slowly released, and the fertilizer efficiency is prolonged.
Description
Technical Field
The invention relates to the technical field of agricultural fertilizers, in particular to a slow-release compound fertilizer and a preparation method thereof.
Background
The fertilizer is a fertilizer used in the existing agriculture, and as macronutrient elements of nitrogen, phosphorus and potassium in soil can not meet the growth requirement of crops, the fertilizer needs to be supplemented by applying the fertilizer containing nitrogen, phosphorus and potassium. Fertilizers containing only one kind of nutrient element with marked content are called unit fertilizers, such as nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and the like. The fertilizer containing more than two of the three nutrient elements of nitrogen, phosphorus and potassium and the content of which can be indicated is called compound fertilizer. The fertilizer is usually seriously lost in rainy days or high temperature after being applied, so that the fertilizer is wasted.
The existing common compound fertilizer has the characteristics of quick dissolution, low utilization rate and short fertilizer efficiency. Mainly uses nitrogen, phosphorus and potassium as major elements. The growth of crops also needs medium trace elements, such as calcium, magnesium, zinc, boron, copper, molybdenum, iron, manganese and the like. The common compound fertilizer is easy to volatilize at high temperature and lose under rain leaching. The trace elements in the common compound fertilizer can not be fully supplemented, so that the synergistic effect of all the elements is weakened, and even the antagonism is generated. The existing common compound fertilizer cannot solve the problem that crops with a longer growth cycle, such as eucalyptus in Guangdong of Guangxi, about 5000 ten thousand mu, are cut once in the growth period of about 5 years, and 85% of the eucalyptus are planted on mountainous regions with the gradient of more than 30 degrees. If a common compound fertilizer is applied, the rain leaching loss is particularly serious. Therefore, it is required to provide a compound fertilizer having a slow release effect to reduce the leaching loss by rainwater.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a slow-release compound fertilizer.
The second purpose of the invention is to provide a preparation method of the slow-release compound fertilizer.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention relates to a slow-release compound fertilizer which comprises the following components in parts by weight: 40-60 parts of sepiolite, 500 parts of urea, 300 parts of monoammonium phosphate, 400 parts of potassium chloride, 10-30 parts of calcium powder, 5-15 parts of borax and 5-10 parts of trace elements.
Preferably, the trace element is selected from at least one of magnesium, zinc, copper, iron, molybdenum and manganese.
Preferably, the trace element is selected from at least one of magnesium, zinc, copper, iron, molybdenum and manganese and EDTA salt.
Preferably, the trace elements comprise 5-7 parts of EDTA magnesium, 1-3 parts of EDTA zinc, 0.5-2 parts of EDTA copper, 0.1-1 part of EDTA iron, 0.1-0.5 part of EDTA molybdenum and 0.1-0.5 part of EDTA manganese.
EDTA is EDTA, which can form salt with metal ion. Because EDTA has the function of a chelating agent, compared with the chelated trace element fertilizer formed by the elements and the inorganic trace element fertilizer, the EDTA is not easy to be fixed in soil, is easy to dissolve in water, is not dissociated and can be well absorbed and utilized by plants. Can also be mixed with other solid or liquid fertilizers for application without chemical reaction and reducing the fertilizer efficiency of any fertilizer.
Preferably, the slow-release compound fertilizer comprises the following components in parts by weight: 50 parts of sepiolite, 400 parts of urea, 200 parts of ammonium dihydrogen phosphate, 300 parts of potassium chloride, 20 parts of calcium powder, 10 parts of borax, 6 parts of EDTA magnesium, 2 parts of EDTA zinc, 1 part of EDTA copper, 0.5 part of EDTA iron, 0.3 part of EDTA molybdenum and 0.2 part of EDTA manganese.
The invention also relates to a preparation method of the slow-release compound fertilizer, which comprises the following steps:
(1) uniformly mixing the sepiolite, the urea, the ammonium dihydrogen phosphate, the potassium chloride, the calcium powder, the borax and the trace elements to obtain a mixed material;
(2) and adding the mixed material into a mold, extruding and forming the mixture under a pressurizing condition, and taking out the mixture from the mold to obtain the slow-release compound fertilizer.
Preferably, the pressurization is carried out by a pressing device with hydraulic pressure, and the pressure is controlled to be 26-30 MPa.
Preferably, the particle size of the slow-release compound fertilizer is 1-7 cm, and preferably 4-6 cm. The slow-release compound fertilizer prepared by the invention can control the slow-release time through the particle size of the compound fertilizer, and the particle size and the slow-release time are in direct proportion.
The invention has the beneficial effects that:
the invention provides a slow-release compound fertilizer, which comprises sepiolite and trace elements. The slow release compound fertilizer can solve the problems of common compound fertilizers in the following aspects: 1. by increasing the particle size of the compound fertilizer and the physical properties of the particle density, the solubility of the compound fertilizer is slowed down and the leaching loss of rainwater is reduced. 2. By adding trace elements such as calcium and boron and chelated magnesium, zinc, copper, molybdenum, iron and manganese, the fertilizer efficiency of the compound fertilizer can be improved through the synergistic effect of multiple elements. 3. By adding natural sepiolite as a carrier and utilizing the adsorbability of the sepiolite, the compound fertilizer is slowly released, and the fertilizer efficiency is prolonged.
The invention also provides a preparation method of the slow-release compound fertilizer, which is characterized in that a plurality of fertilizers and sepiolite are uniformly mixed, and a large-particle-size high-density granular fertilizer is prepared by using a hydraulic extrusion device, so that the multi-element synergistic effect is realized, and the super-adsorbability of the sepiolite is utilized to play a role in comprehensive slow release, thereby improving the fertility and the utilization rate of the fertilizer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The slow-release compound fertilizer comprises the following components in parts by weight: 40 parts of sepiolite, 300 parts of urea, 100 parts of ammonium dihydrogen phosphate, 200 parts of potassium chloride, 10 parts of calcium powder, 5 parts of borax, 5 parts of EDTA magnesium, 1 part of EDTA zinc, 0.5 part of EDTA copper, 0.1 part of EDTA iron, 0.1 part of EDTA molybdenum and 0.1 part of EDTA manganese.
The preparation method of the slow-release compound fertilizer comprises the following steps:
(1) uniformly mixing the sepiolite, the urea, the ammonium dihydrogen phosphate, the potassium chloride, the calcium powder, the borax and the trace elements to obtain a mixed material;
(2) adding the mixture into a mold, extruding and molding the mixture under the pressure condition of 26-30Mpa, and taking out the mixture from the mold to obtain the slow-release compound fertilizer which is a rhombohedral body with the side length of 5 cm.
Example 2
The slow-release compound fertilizer comprises the following components in parts by weight: 60 parts of sepiolite, 500 parts of urea, 300 parts of ammonium dihydrogen phosphate, 400 parts of potassium chloride, 30 parts of calcium powder, 15 parts of borax, 7 parts of EDTA magnesium, 3 parts of EDTA zinc, 2 parts of EDTA copper, 1 part of EDTA iron, 0.5 part of EDTA molybdenum and 0.5 part of EDTA manganese.
The preparation method of the slow release compound fertilizer is the same as that of the example 1.
Example 3
The slow-release compound fertilizer comprises the following components in parts by weight: 50 parts of sepiolite, 400 parts of urea, 200 parts of ammonium dihydrogen phosphate, 300 parts of potassium chloride, 20 parts of calcium powder, 10 parts of borax, 6 parts of EDTA magnesium, 2 parts of EDTA zinc, 1 part of EDTA copper, 0.5 part of EDTA iron, 0.3 part of EDTA molybdenum and 0.2 part of EDTA manganese.
The preparation method of the slow release compound fertilizer is the same as that of the example 1.
Comparative example 1
Concentrated potassium sulfate compound fertilizer is used in 18-18-18 weight portions.
Comparative example 2
The composition of the slow-release compound fertilizer is the same as that in example 3, except that the components are mixed and added into a granulator to obtain granules with the particle size of 20-40 meshes in the preparation process.
Comparative example 3
The composition and preparation process of the slow release compound fertilizer are the same as those of example 3, except that the particle size of the slow release compound fertilizer is 1 cm.
Test method
A eucalyptus planting land in Guangxi east forest of Toseiu town of Fuseus county in Chongxi Zhuang nationality autonomous region is selected as a test land, the test land is located on a mountain land, and the slope is about 25 degrees. Under the condition of consistent soil quality, 6 treatment groups are set in the test, and the treatment groups 1 to 3 are respectively applied with the fertilizers prepared in the corresponding examples 1 to 3; treatment groups 4-6 were control treatments, to which fertilizers corresponding to comparative examples 1-3 were applied, respectively.
The eucalyptus trees are planted in No. 5 of No. 2 of 2019, and the planting density is 110-. The base fertilizer is long-acting calcium magnesium phosphate fertilizer which is applied one month before afforestation, and 500 g of the base fertilizer is applied to each hole. Each treatment group was applied with the fertilizers prepared in the corresponding examples 1-3 and comparative examples 1-3 as topdressing, respectively, with the application amount in the first year being 300-. During the test period, the management of eucalyptus is the same as the daily management of the forest. The results of the statistical analysis are shown in Table 1.
Wherein, the growth rate is measured once every 1 year, the plant height measured at the adjacent test points is H1 for the first time (measured in 2 months and 10 days in 2019), and the plant height measured at the last time is H2 (measured in 2 months and 10 days in 2020). The growth rate (| H2-H1 |/H1) × 100%.
TABLE 1
Table 2 shows that the slow-release compound fertilizer according to the example of the present invention significantly improves the growth rate and survival rate of eucalyptus compared to comparative examples 1 and 2. The slow-release compound fertilizer of the embodiment 3 has the best effect; the products obtained in the comparative examples 1 and 2 have general effects of increasing the growth rate and the survival rate of eucalyptus, which shows that the formula proportion of the components of the eucalyptus oil is scientific and effective. The compound fertilizer composition of comparative example 3 is the same as example 3 except that the particle size is reduced, the slow release path within the granules is shortened, and the efficacy is also reduced.
The large slope of the mountain land causes large loss of water and fertilizer, namely large leaching loss of the fertilizer. According to the invention, by applying the large-particle slow-release compound fertilizer and slowly dissolving the particles to release the fertility, the utilization rate of the fertilizer is greatly improved. And the fertilization mode is different from that of the common compound fertilizer, the original application of the compound fertilizer needs to dig a pit firstly, and backfill is carried out after fertilization, namely three times of operation is needed. The large-particle slow-release compound fertilizer is adopted only by knocking soil under the trees apart, placing the particles of the slow-release compound fertilizer in gaps of the knocked-apart soil and treading the soil tightly by feet, so that manpower and material resources for fertilizing are saved.
In summary, the advantages of the present invention include: 1. solves the problem of serious fertilizer loss of crops in mountainous and sloping fields due to rain loss. 2. The fertilizer consumption is reduced, the utilization rate is improved, and the transportation cost of mountainous regions and sloping fields is reduced. 3. Convenient application, labor saving and safety.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The slow-release compound fertilizer is characterized by comprising the following components in parts by weight: 40-60 parts of sepiolite, 500 parts of urea, 300 parts of ammonium dihydrogen phosphate, 400 parts of potassium chloride, 10-30 parts of calcium powder, 5-15 parts of borax and 5-10 parts of trace elements.
2. The slow-release compound fertilizer as claimed in claim 1, wherein the trace elements are selected from at least one of magnesium, zinc, copper, iron, molybdenum and manganese.
3. The slow-release compound fertilizer as claimed in claim 2, wherein the trace elements are selected from salts formed by EDTA and at least one of magnesium, zinc, copper, iron, molybdenum and manganese.
4. The slow-release compound fertilizer as claimed in claim 3, wherein the trace elements comprise 5-7 parts of EDTA magnesium, 1-3 parts of EDTA zinc, 0.5-2 parts of EDTA copper, 0.1-1 part of EDTA iron, 0.1-0.5 part of EDTA molybdenum and 0.1-0.5 part of EDTA manganese.
5. The slow-release compound fertilizer as claimed in claim 4, which comprises the following components in parts by weight: 50 parts of sepiolite, 400 parts of urea, 200 parts of ammonium dihydrogen phosphate, 300 parts of potassium chloride, 20 parts of calcium powder, 10 parts of borax, 6 parts of EDTA magnesium, 2 parts of EDTA zinc, 1 part of EDTA copper, 0.5 part of EDTA iron, 0.3 part of EDTA molybdenum and 0.2 part of EDTA manganese.
6. The method for preparing a slow-release compound fertilizer according to any one of claims 1 to 5, comprising the steps of:
(1) uniformly mixing the sepiolite, the urea, the ammonium dihydrogen phosphate, the potassium chloride, the calcium powder, the borax and the trace elements to obtain a mixed material;
(2) and adding the mixed material into a mold, extruding and forming the mixture under a pressurizing condition, and taking out the mixture from the mold to obtain the slow-release compound fertilizer.
7. The method according to claim 6, wherein in step (2), the pressurization is performed by a pressing apparatus with hydraulic pressure.
8. The method according to claim 6, wherein the pressurizing pressure in the step (2) is 26 to 30 MPa.
9. The method as claimed in claim 6, wherein the particle size of the slow release compound fertilizer is 1-7 cm.
10. The method as claimed in claim 6, wherein the particle size of the slow release compound fertilizer is 4-6 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141713.XA CN112898087A (en) | 2021-02-02 | 2021-02-02 | Slow-release compound fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141713.XA CN112898087A (en) | 2021-02-02 | 2021-02-02 | Slow-release compound fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112898087A true CN112898087A (en) | 2021-06-04 |
Family
ID=76121347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110141713.XA Pending CN112898087A (en) | 2021-02-02 | 2021-02-02 | Slow-release compound fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112898087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511940A (en) * | 2021-07-26 | 2021-10-19 | 武汉博润科技有限公司 | Compound fertilizer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244517A (en) * | 1999-08-31 | 2000-02-16 | 湖南省地质研究所 | Long-acting sepiolite fertilizer |
| CN102815998A (en) * | 2012-07-31 | 2012-12-12 | 马鞍山科邦生态肥有限公司 | Special fertilizer for single cropping rice |
| CN103214308A (en) * | 2013-04-17 | 2013-07-24 | 广西新方向化学工业有限公司 | Novel special fertilizer for eucalyptus and preparation method thereof |
| CN104672011A (en) * | 2015-02-09 | 2015-06-03 | 湖南农业大学 | Nutrient water holding agent for roof garden plants |
| CN104692890A (en) * | 2013-12-06 | 2015-06-10 | 烟台鑫海耐磨胶业有限公司 | Soybean specific fertilizer |
-
2021
- 2021-02-02 CN CN202110141713.XA patent/CN112898087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244517A (en) * | 1999-08-31 | 2000-02-16 | 湖南省地质研究所 | Long-acting sepiolite fertilizer |
| CN102815998A (en) * | 2012-07-31 | 2012-12-12 | 马鞍山科邦生态肥有限公司 | Special fertilizer for single cropping rice |
| CN103214308A (en) * | 2013-04-17 | 2013-07-24 | 广西新方向化学工业有限公司 | Novel special fertilizer for eucalyptus and preparation method thereof |
| CN104692890A (en) * | 2013-12-06 | 2015-06-10 | 烟台鑫海耐磨胶业有限公司 | Soybean specific fertilizer |
| CN104672011A (en) * | 2015-02-09 | 2015-06-03 | 湖南农业大学 | Nutrient water holding agent for roof garden plants |
Non-Patent Citations (2)
| Title |
|---|
| 吴正红等: "《药剂学》", 30 April 2020, 中国医药科技出版社 * |
| 张扬珠等: "《肥料使用技术》", 31 May 2018, 湖南科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511940A (en) * | 2021-07-26 | 2021-10-19 | 武汉博润科技有限公司 | Compound fertilizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Savant et al. | Deep placement of urea supergranules in transplanted rice: principles and practices | |
| CN103664343A (en) | Special controlled-release fertilizer for fast-growing eucalyptus and preparation method thereof | |
| Wang et al. | Low recovery efficiency of basal fertilizer-N in plants does not indicate high basal fertilizer-N loss from split-applied N in transplanted rice | |
| CN101003449A (en) | Fertilizer dedicated to eucalyptus | |
| CN107935668A (en) | It is a kind of to be used to improve blade face preparation of crop anti-adversity and preparation method thereof | |
| CN102531797A (en) | Fertilizer special for super rice and preparation method for fertilizer | |
| CN104591925A (en) | Synergetic environment-friendly fertilizer for improving soil for planting forest, and production method of synergetic environment-friendly fertilizer | |
| CN104262065B (en) | A kind of slow long-acting compound fertilizer of containing nitrogenous fertilizers synergist and preparation method thereof | |
| CN105669297A (en) | Humic acid-containing complete-element water soluble fertilizer, and preparation method and application thereof | |
| CN103694038A (en) | Value-added humic acid urea and preparation method thereof | |
| CN107245001A (en) | A kind of functional slow-release fertilizer and its production method | |
| CN105838376A (en) | Humic acid soil conditioner, and composition, preparation method and application method thereof | |
| CN103058755B (en) | Slow release compound fertilizer applicable to plantation of cotton | |
| CN103172435B (en) | Controlled-release fertilizer for wax-apple trees and method for preparing same | |
| CN112898087A (en) | Slow-release compound fertilizer and preparation method thereof | |
| CN113105286A (en) | Preparation method of coated fertilizer with longer nutrition effect and coated fertilizer | |
| CN103739406A (en) | Humic acid chelated boron, magnesium, zinc and iron fertilizer and preparation method thereof | |
| Youngdahl et al. | 8. New developments in nitrogen fertilizers for rice | |
| CN103910580B (en) | Common fertilizer special for sesbania in medium and low-yield fields in Huang-Huai-Hai region | |
| CN103304306A (en) | Rubber controlled release fertilizer and preparation method thereof | |
| CN107176880A (en) | High tower is complexed production method of humic acid | |
| CN104230567B (en) | In Middle And Lower Reaches of Changjiang River fertilizer special for cotton and preparation method thereof | |
| CN105801297A (en) | Soil conditioner as well as composition, preparation method and application method thereof | |
| CN105753612A (en) | Improvement on production method of long-acting controlled-release chelated synergist | |
| CN111153734A (en) | Alkaline fertilizer with chelating slow-release synergism and soil improvement effects and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |