CN111662124A - Controlled release fertilizer for wheat-covered peanuts and preparation method thereof - Google Patents

Controlled release fertilizer for wheat-covered peanuts and preparation method thereof Download PDF

Info

Publication number
CN111662124A
CN111662124A CN202010724522.1A CN202010724522A CN111662124A CN 111662124 A CN111662124 A CN 111662124A CN 202010724522 A CN202010724522 A CN 202010724522A CN 111662124 A CN111662124 A CN 111662124A
Authority
CN
China
Prior art keywords
fertilizer
wheat
peanuts
coating
covered
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.)
Withdrawn
Application number
CN202010724522.1A
Other languages
Chinese (zh)
Inventor
吴正锋
沈浦
孙学武
郑亚萍
郑永美
于天一
王才斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Peanut Research Institute
Original Assignee
Shandong Peanut Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Peanut Research Institute filed Critical Shandong Peanut Research Institute
Priority to CN202010724522.1A priority Critical patent/CN111662124A/en
Publication of CN111662124A publication Critical patent/CN111662124A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C21/00—Methods of fertilising, sowing or planting
    • A01C21/005—Following a specific plan, e.g. pattern
    • 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
    • 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
    • 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
    • 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
    • C05G5/12—Granules or flakes
    • 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
    • C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

Abstract

The invention belongs to the technical field of fertilizer preparation, and discloses a controlled release fertilizer for wheat-coated peanuts and a preparation method thereof, wherein the controlled release fertilizer for the wheat-coated peanuts comprises a core fertilizer and a coating layer of the core fertilizer; the core fertilizer consists of urea, monoammonium phosphate, calcium magnesium phosphate fertilizer, potassium sulfate, borax, amino acid chelated trace elements, urease inhibitor, nitrification inhibitor and perlite in percentage by mass; the coating layer of the core fertilizer comprises an attapulgite powder coating layer material and a water-retaining coating according to mass fractionThe material is polyvinyl alcohol. The content of the three major elements of nitrogen, phosphorus and potassium is 35.6 percent of N-P2O5‑K2The ratio of O is 10:11.6: 14. The controlled release fertilizer can slow or control the release of nutrients, and the fertilizer efficiency release can better meet the requirement of the wheat-covered peanuts on the nutrients in the whole growth period; the fertilizer using amount can be reduced, the utilization efficiency of the fertilizer is improved, the yield and the quality are improved, and the agricultural production cost is saved.

Description

Controlled release fertilizer for wheat-covered peanuts and preparation method thereof
Technical Field
The invention belongs to the technical field of fertilizer preparation, and particularly relates to a controlled release fertilizer for wheat-covered peanuts and a preparation method thereof.
Background
The wheat-covered peanuts are planted among wheat rows 15-20 days before wheat is harvested, and the planting mode is mainly applied to Huanghuai peanut producing areas. The fertilizer is difficult to be applied before and after seeding, and the shading is easy to grow excessively in the seedling stage. At present, the prior stubble fertilizer and the later stage topdressing are generally applied again in production, urea and common compound fertilizer are used, a special controlled release fertilizer product is not available, the fertilizer consumption is large, the fertilizer efficiency utilization rate is low, and the effect is poor.
Through the above analysis, the problems and defects of the prior art are as follows: (1) in the prior art, the fertilizer for wheat-covered peanuts is large in dosage and poor in effect, the demand supply of crop nutrition in each growth period of the wheat-covered peanuts cannot be met, and the fertilizer input is difficult to reduce.
(2) The calcium fertilizer which is greatly needed by the peanuts and the trace elements which are vital to the growth of the peanuts are not supplemented.
The significance of solving the problems and the defects is as follows: aiming at the characteristics of growth and fertilizer requirement of wheat-covered peanuts, the special controlled-release fertilizer special for wheat-covered peanuts and a matched fertilizing technology are developed, so that the effect of accurate controlled release of the controlled-release fertilizer can be better exerted, the efficient absorption and utilization of the fertilizer by the wheat-covered peanuts are realized, and the aims of reducing the excessive input of the fertilizer and ensuring the yield of the peanuts are finally fulfilled. Meanwhile, the formula contains calcium which is needed by peanuts more and key trace elements which are needed by the peanuts.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a controlled release fertilizer for wheat-covered peanuts and a preparation method thereof.
The controlled release fertilizer for wheat-coated peanuts is composed of a core fertilizer and a coating layer of the core fertilizer;
the core fertilizer consists of 16-20% of urea, 19-22% of monoammonium phosphate, 5-7% of calcium magnesium phosphate, 26-30% of potassium sulfate, 0.2-0.5% of borax, 0.2-0.5% of amino acid chelated trace elements, 0.8-1.3% of urease inhibitor and nitrification inhibitor and 4-6% of perlite by mass fraction;
the coating layer of the core fertilizer consists of 15-17% of attapulgite powder coating material and 5-7% of water-retaining coating material polyvinyl alcohol in percentage by mass.
Further, the controlled release fertilizer for the wheat-covered peanuts comprises, by mass, 16.9% of urea, 20.5% of monoammonium phosphate, 6% of calcium magnesium phosphate, 28% of potassium sulfate, 0.3% of borax, 0.3% of amino acid chelated trace elements, 0.28% of urease inhibitor, 0.61% of nitrification inhibitor DCD, 0.11% of nitrification inhibitor DMPP, 5% of perlite, 16% of attapulgite powder and 6% of polyvinyl alcohol.
Further, the formula with the content of the three major elements of nitrogen, phosphorus and potassium being 35.6 percent is N-P2O5-K2O，N-P2O5-K2The O ratio was 1:1.16: 1.4. Meanwhile, the formula contains key element calcium for peanut pod development.
Furthermore, the peanut growth trace elements are boron, zinc and molybdenum; the dosage of borax is 3kg, the effective boron content is 0.33kg, and the dosage of amino acid chelated zinc, iron, molybdenum and manganese is 3 kg.
The invention also aims to provide a preparation method of the controlled release fertilizer for wheat-covered peanuts, which comprises the following steps:
adding HQ (hydroquinone) and a binder into nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and medium-trace element raw materials to realize compounding, simultaneously adding dicyandiamide (DCD) and DMPP (3, 4-dimethylpyrazole phosphate) nitrification inhibitor, and then granulating by using a granulator under the action of the binder and steam;
step two, drying, then screening, directly returning small particles to a granulator, and conveying large particles to a previous granulation procedure after the large particles need to be crushed to participate in secondary granulation together with the raw materials;
step three, adding an anti-caking agent, a synergist (perlite), a conditioner (such as talcum powder) and the like into the preliminarily dried fertilizer particles for conditioning, and then subpackaging;
step four, coating the core fertilizer as a raw material and attapulgite powder as an initial coating material for multiple times (4 times) by using a disc coating machine, and uniformly coating the mineral powder on the surface layer of fertilizer particles under the action of a polyvinyl alcohol adhesive;
and step five, coating the outer water-retaining agent in a boiling fluidized bed by taking the initially wrapped fertilizer as a core and polyvinyl alcohol as a membrane material to finish the whole coating process.
Further, the coating agent is attapulgite powder, the coating amount is 16%, and the coating is finished by continuously coating for 4 times.
Further, the outer-layer water-retaining agent is an environment-friendly polymer water-retaining material based on polyvinyl alcohol, and the thickness of a coating film is 100 g.m-2。
The invention also aims to provide a fertilizing method of the controlled release fertilizer for wheat-covered peanuts, which specifically comprises the following steps:
according to the land fertility level and the yield requirement, 50-70 kg of special fertilizer for wheat-covered peanuts is applied to each mu, 20kg of special fertilizer for wheat-covered peanuts in March is applied together in spring top dressing, no fertilizer is applied in later period of peanut interplanting, and the rest 30-50 kg of special fertilizer for wheat-covered peanuts is applied in stubble cleaning after wheat harvesting.
By combining all the technical schemes, the invention has the advantages and positive effects that:
aiming at the characteristics of growth and fertilizer requirement of the wheat-covered peanuts, the special controlled-release fertilizer special for the wheat-covered peanuts and a matched fertilizing technology are developed, so that the requirements of the wheat-covered peanuts on nutrients in each period are better met; the fertilizer can better play the role of accurately controlling the controlled release fertilizer, realize the efficient absorption and utilization of the fertilizer by the wheat-covered peanuts, and finally achieve the purposes of reducing the excessive input of the fertilizer and ensuring the yield of the peanuts.
Technical effect or experimental effect of comparison. Compared with the ternary compound fertilizer (15-15-15) with the same dosage, the product of the invention reduces the input amount of nitrogen, phosphorus and potassium by 33.3%, 22.7% and 6.7% respectively, improves the utilization rate of nitrogen, phosphorus and potassium fertilizers by 22.6% -31.8%, 10.5% -12.2% and 6.2% -8.1% respectively, increases the pod yield of peanuts by 8.1% -9.2% and improves the fruit plumpness by 31.8% -35.9%.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a flow chart of a preparation method of a controlled release fertilizer for wheat-covered peanuts provided by an embodiment of the invention.
FIG. 2 is a schematic diagram of a production process of a core fertilizer provided by an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a controlled release fertilizer for wheat-covered peanuts and a preparation method thereof, and the invention is described in detail with reference to the accompanying drawings.
The controlled release fertilizer for wheat-coated peanuts provided by the invention consists of a core fertilizer and a coating layer of the core fertilizer;
the core fertilizer consists of 16-20% of urea, 19-22% of monoammonium phosphate, 5-7% of calcium magnesium phosphate, 26-30% of potassium sulfate, 0.2-0.5% of borax, 0.2-0.5% of amino acid chelated trace elements, 0.8-1.3% of urease inhibitor and nitrification inhibitor and 4-6% of perlite by mass fraction;
the coating layer of the core fertilizer consists of 15-17% of attapulgite powder coating material and 5-7% of water-retaining coating material polyvinyl alcohol in percentage by mass.
As shown in fig. 1, the preparation method of the controlled release fertilizer for peanuts covered with wheat provided by the embodiment of the invention comprises the following steps:
s101, adding HQ and a binder into nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and medium and trace element raw materials to realize compounding, and adding a DCD and DMPP nitrification inhibitor and then granulating by a granulator under the action of the binder and steam.
S102, drying, screening, directly returning small particles to a granulator, and conveying large particles to a previous granulation procedure after crushing to participate in secondary granulation together with raw materials.
S103, adding an anti-caking agent, a synergist, a conditioner and the like into the preliminarily dried fertilizer particles for conditioning, and then subpackaging.
And S104, taking the produced core fertilizer as a raw material, coating the core fertilizer for multiple times by using a coating agent through a disc coating machine, and uniformly coating the mineral powder on the surface layer of fertilizer particles under the action of a polyvinyl alcohol adhesive.
And S105, coating the outer water-retaining agent in a boiling fluidized bed by taking the initially wrapped fertilizer as a core to finish the whole coating process.
The scheme of the invention is further described by combining the specific embodiment.
According to the quantity of nitrogen, phosphorus and potassium absorbed by every 100kg of produced pods, the comprehensive factors such as nitrogen fixation and supply of nitrogen and fertilizer supply of soil nodules are combined. Provides a proper nitrogen-phosphorus-potassium three-element proportioning formula.
The formula is as follows: the total content of nitrogen, phosphorus and potassium is 35.6 percent, the element proportion is 1:1.16:1.4, the calcium content is 2.7 percent, and meanwhile, the nutrient solution contains trace elements which are necessary for the growth of peanuts, such as boron, zinc, molybdenum and the like. The ingredients are as follows:
0.28 percent of urease inhibitor, 0.61 percent of nitrification inhibitor DCD and 0.11 percent of DMPP are required to be added into the special controlled release fertilizer for the wheat-covered peanuts; 5% of ammonia stabilizer modified perlite porous material, 16% of attapulgite powder coating material and 6% of water-retaining coating material polyvinyl alcohol. The formula with the content of the three major elements of nitrogen, phosphorus and potassium of 35.6 percent is N-P2O5-K2O of 10-11.6-14, and the nutrient ratio is 1:1.16: 1.4.
The raw material dosage and nutrient content (kg/t) are as follows:
the amount of urea was 169kg, which contained 77.7kg of N.
The amount of monoammonium phosphate is 205kg, wherein the monoammonium phosphate contains P2O5104.8kg, and 22.5kg of N.
The dosage of the calcium magnesium phosphate fertilizer is 60kg, wherein the calcium magnesium phosphate fertilizer contains P2O510.8kg, CaO 27kg, MgO 7.2kg, SiO2It was 12 kg.
The potassium sulfate dosage is 280kg, wherein the potassium sulfate contains K2O 140kg。
The dosage of borax is 3kg, wherein the effective boron content is 0.33 kg.
The dosage of the amino acid chelated zinc, iron, molybdenum and manganese is 3 kg.
The dosage of urease and nitrification inhibitor is 10 kg.
The dosage of perlite is 50 kg.
The dosage of the attapulgite powder is 160 kg.
The amount of polyvinyl alcohol used was 60 kg.
The process comprises the following steps: the attapulgite powder is used as a coating agent, the coating amount is 16 percent, and the coating is finished by continuous coating for 4 times.
The environment-friendly polymer water-retaining material based on polyvinyl alcohol is used as coating outer layer coating agent, 60 g.m-2The thickness of the envelope. The initial dissolution rate is 8.69 percent respectively, the controlled release time is 69 days according to the calculation that 85 percent of nutrients in the fertilizer are completely released.
The process flow is divided into two steps, namely, the production of the core fertilizer; and the second is the coating of the core fertilizer.
The production process of the core fertilizer comprises the following steps: adding HQ and a binder into nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and medium trace element raw materials to realize compounding, adding a DCD and DMPP nitrification inhibitor, then granulating by a granulator under the action of the binder and steam, drying, screening, directly returning small particles to the granulator, crushing large particles, and conveying the crushed large particles to a former granulation process to participate in secondary granulation together with the raw materials. The fertilizer particles after primary drying need to be conditioned by adding an anti-caking agent, a synergist (perlite), a conditioner (such as talcum powder) and the like, and then are subpackaged. As shown in fig. 2.
The coating process comprises the following steps: the core fertilizer is produced as a raw material, attapulgite powder is used as an initial coating material, multiple coating (4 times) is carried out by a disc coating machine, mineral powder is uniformly coated on the surface layer of fertilizer particles under the action of a polyvinyl alcohol adhesive, then the initially coated fertilizer is used as a core, the polyvinyl alcohol is used as a membrane material, and the coating of an outer-layer water-retaining agent is carried out in a boiling fluidized bed, so that the whole coating process is completed.
The fertilizing method comprises the following steps:
according to the land fertility level and the yield requirement, 50-70 kg of special fertilizer for wheat-covered peanuts is applied to each mu, wherein 20kg of special fertilizer for wheat-covered peanuts in the march is applied together during spring top dressing, no fertilizer is applied during interplanting of peanuts, and the rest 30-50 kg of special fertilizer for wheat-covered peanuts is applied during stubble cleaning after wheat harvesting.
The invention is further described below with reference to specific experimental data.
Application effect of special fertilizer for wheat-covered peanuts
Figure BDA0002601181960000061
Breeding peanut 9812; 20kg of fertilizer is applied when the topdressing is carried out on March wheat, and the fertilizer is applied when stubble cleaning is carried out after the rest part of wheat is harvested; pod and yield data were measured at harvest; soil data are soil sampling and measuring in the pod bearing period.
The invention is further described with reference to specific examples.
Example 1
The controlled release fertilizer for the wheat-covered peanuts comprises, by mass, 16.9% of urea, 20.5% of monoammonium phosphate, 6% of calcium magnesium phosphate, 28% of potassium sulfate, 0.3% of borax, 0.3% of amino acid chelated trace elements, 0.28% of urease inhibitor, 0.61% of nitrification inhibitor DCD, 0.11% of nitrification inhibitor DMPP, 5% of perlite, 16% of attapulgite powder and 6% of polyvinyl alcohol.
Example 2
The controlled release fertilizer for wheat-coated peanuts provided by the invention consists of a core fertilizer and a coating layer of the core fertilizer;
the core fertilizer consists of 18 percent of urea, 20 percent of monoammonium phosphate, 6 percent of calcium magnesium phosphate, 28 percent of potassium sulfate, 0.3 percent of borax, 0.3 percent of amino acid chelated trace elements, 1.0 percent of urease inhibitor and nitrification inhibitor and 4 percent of perlite by mass fraction;
the coating layer of the core fertilizer consists of 16 percent of attapulgite powder coating material and 6.4 percent of water-retaining coating material polyvinyl alcohol according to mass fraction.
Example 3
The controlled release fertilizer for wheat-coated peanuts provided by the invention consists of a core fertilizer and a coating layer of the core fertilizer;
the core fertilizer consists of 20 percent of urea, 22 percent of monoammonium phosphate, 7 percent of calcium magnesium phosphate, 18.3 percent of sulfuric acid, 0.5 percent of borax, 0.5 percent of amino acid chelated trace elements, 1.3 percent of urease inhibitor and nitrification inhibitor and 6 percent of perlite according to mass fraction;
the coating layer of the core fertilizer consists of 17 percent of attapulgite powder coating material and 7 percent of water-retaining coating material polyvinyl alcohol according to mass fraction.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The controlled release fertilizer for wheat-covered peanuts is characterized by consisting of a core fertilizer and a coating layer of the core fertilizer;
the core fertilizer consists of 16-20% of urea, 19-22% of monoammonium phosphate, 5-7% of calcium magnesium phosphate, 26-30% of potassium sulfate, 0.2-0.5% of borax, 0.2-0.5% of amino acid chelated trace elements, 0.8-1.3% of urease inhibitor and nitrification inhibitor and 4-6% of perlite by mass fraction;
the coating layer of the core fertilizer consists of 15-17% of attapulgite powder coating material and 5-7% of water-retaining coating material polyvinyl alcohol in percentage by mass.
2. The controlled-release fertilizer for the wheat-covered peanuts as claimed in claim 1, which consists of 16.9% of urea, 20.5% of monoammonium phosphate, 6% of calcium magnesium phosphate, 28% of potassium sulfate, 0.3% of borax, 0.3% of amino acid chelated trace elements, 0.28% of urease inhibitor, 0.61% of nitrification inhibitor DCD, 0.11% of nitrification inhibitor DMPP, 5% of perlite, 16% of attapulgite powder and 6% of polyvinyl alcohol by mass ratio.
3. The controlled-release fertilizer for peanuts covered with wheat as claimed in claim 1, wherein the content of nitrogen, phosphorus and potassium is 35.6% N-P2O5-K2The proportion of O is 10:11.6:14, N-P2O5-K2The ratio of O is 1:1.16:1.4, and the content of calcium is 2.7%.
4. The controlled-release fertilizer for peanuts covered with wheat as claimed in claim 1, wherein the peanut growth trace elements are boron, zinc and molybdenum; the dosage of borax is 3kg, the effective boron content is 0.33kg, and the dosage of amino acid chelated zinc, iron, molybdenum and manganese is 3 kg.
5. The preparation method of the controlled release fertilizer for the peanuts covered with wheat as claimed in any one of claims 1 to 4 comprises the following steps:
adding HQ and a binder into nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and medium and trace element raw materials to realize compounding, and adding a DCD and DMPP nitrification inhibitor and then granulating by a granulator under the action of the binder and steam;
step two, drying, then screening, directly returning small particles to a granulator, and conveying large particles to a previous granulation procedure after the large particles need to be crushed to participate in secondary granulation together with the raw materials;
thirdly, adding an anti-caking agent, a synergist, a conditioner and the like into the preliminarily dried fertilizer particles for conditioning, and then subpackaging;
step four, taking the produced core fertilizer as a raw material, coating the core fertilizer for multiple times by using a coating agent through a disc coating machine, and uniformly coating the mineral powder on the surface layer of fertilizer particles under the action of a polyvinyl alcohol adhesive;
and step five, taking the initially wrapped fertilizer as a core, and performing coating of the outer water-retaining agent in a boiling fluidized bed to finish the whole coating process.
6. The preparation method of the controlled release fertilizer for wheat-covered peanuts as claimed in claim 5, wherein the coating agent is attapulgite powder, the coating amount is 16%, and the coating is completed by coating for 4 times continuously.
7. The method for preparing the controlled release fertilizer for peanuts covered with wheat as claimed in claim 5, wherein the outer water retention agent is an environment-friendly polymer water retention material based on polyvinyl alcohol, and the thickness of the coating is 60 g.m-2。
8. A method for applying the controlled-release fertilizer for peanuts covered with wheat, which comprises applying the controlled-release fertilizer for peanuts covered with wheat according to any one of claims 1 to 4, wherein the method for applying the controlled-release fertilizer for peanuts covered with wheat comprises:
according to the land fertility level and the yield requirement, 50-70 kg of special fertilizer for wheat-covered peanuts is applied to each mu, 20kg of special fertilizer for wheat-covered peanuts in March is applied together in spring top dressing, no fertilizer is applied in later period of peanut interplanting, and the rest 30-50 kg of special fertilizer for wheat-covered peanuts is applied in stubble cleaning after wheat harvesting.
CN202010724522.1A 2020-07-24 2020-07-24 Controlled release fertilizer for wheat-covered peanuts and preparation method thereof Withdrawn CN111662124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010724522.1A CN111662124A (en) 2020-07-24 2020-07-24 Controlled release fertilizer for wheat-covered peanuts and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010724522.1A CN111662124A (en) 2020-07-24 2020-07-24 Controlled release fertilizer for wheat-covered peanuts and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111662124A true CN111662124A (en) 2020-09-15

Family

ID=72392331

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010724522.1A Withdrawn CN111662124A (en) 2020-07-24 2020-07-24 Controlled release fertilizer for wheat-covered peanuts and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111662124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462010A (en) * 2020-12-23 2021-03-09 广东海洋大学 Inspection processing technology for production of special controlled release fertilizer for pineapples

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462010A (en) * 2020-12-23 2021-03-09 广东海洋大学 Inspection processing technology for production of special controlled release fertilizer for pineapples

Similar Documents

Publication Publication Date Title
CN102424633B (en) Self-curing film-coated controlled release fertilizer and preparation method thereof
CN101255082B (en) Organic-inorganic long-acting corn special-purpose compound fertilizer
CN105294363A (en) Formula and film-coating preparation method for biological carbon coated urea
CN103483097B (en) Fertilizer special for saline-alkali soil corns and preparation method thereof
CN105198619B (en) A kind of fertilizer specially for peanut and preparation method thereof made between corn, peanut
CN100562509C (en) A kind of special synergistic formula fertilizer for cured tobacco and preparation method thereof
CN1084320C (en) Long-lasting special-purpose compound mixed fertilizer for corn and rice
CN105777364A (en) Long-actingselenium-enriched coated slow-release compound fertilizer for rice planting and preparation method thereof
CN101580444A (en) Coated slow-release urea containing double inhibitors and preparation method thereof
CN106699338A (en) Special slow-release bulk blending fertilizer for wheat and preparation method of fertilizer
CN101367683A (en) Mixed type sustained and controlled release chemical fertilizer
CN103193546A (en) Special double-membrane inorganic fertilizer for peanuts
CN112062634A (en) Rice slow-release fertilizer and preparation and application methods thereof
CN105859387A (en) A soil-improving slow-release compound fertilizer used for paddy rice planting and a preparing method thereof
CN111792963A (en) Common quick-acting fertilizer-based one-time application large-grain fertilizer for field crops in whole growth period and preparation method and application thereof
CN102363586A (en) Chitosan and sulfur coated special controlled-release fertilizer for wheat and preparation method thereof
WO2017206743A1 (en) Method for rapid manufacturing of novel micronutrient-containing urea
CN110240517B (en) Organic fertilizer with long-acting slow-release effect and preparation method thereof
CN105801320A (en) Degradable environment-friendly coated slow release compound fertilizer for rice planting and preparation method thereof
CN108191584A (en) A kind of watermelon Special slow release fertilizer and preparation method thereof
CN104177160A (en) Special fertilizer for corn
CN111662124A (en) Controlled release fertilizer for wheat-covered peanuts and preparation method thereof
CN101081773A (en) Potato composite fertilizer
CN113636888A (en) Crop nutrition fertilizer
CN113582760B (en) Fertilizer for planting rice with high trace elements and high SOD (superoxide dismutase) and application 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
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20200915