CN115286454A - Special fertilizer for promoting crop yield increase and preparation method thereof - Google Patents
Special fertilizer for promoting crop yield increase and preparation method thereof Download PDFInfo
- Publication number
- CN115286454A CN115286454A CN202211008156.5A CN202211008156A CN115286454A CN 115286454 A CN115286454 A CN 115286454A CN 202211008156 A CN202211008156 A CN 202211008156A CN 115286454 A CN115286454 A CN 115286454A
- Authority
- CN
- China
- Prior art keywords
- fertilizer
- biomass
- crop yield
- coating
- yield increase
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- 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
- C05G3/80—Soil conditioners
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to the technical field of special fertilizers and provides a special fertilizer for promoting crop yield increase and a preparation method thereof. The special fertilizer comprises a coating; the raw materials of the envelope comprise biomass carbon powder, earthworm excrement powder and wheat stalk powder. The preparation method of the special fertilizer comprises the steps of (1) preparing a coating water dispersion liquid and (2) preparing the fertilizer. The special fertilizer can recycle wastes, save resources, is green and environment-friendly, can adsorb most heavy metal ions and harmful toxins in soil, effectively improves soil quality, accelerates growth of crops, improves crop quality and increases crop yield; the fertilizer can also comprehensively supply nutrient elements required by the growth of crops, increase the content of organic matters and microorganisms in soil, and effectively improve the water retention, moisture retention and air permeability of the soil. The preparation method is simple, easy to control and stable in synergistic effect.
Description
Technical Field
The invention belongs to the technical field of special fertilizers, and particularly relates to a special fertilizer for promoting crop yield increase and a preparation method thereof.
Background
Controlled release fertilizers have their unique advantages as a very broad class of special fertilizers. The controlled release fertilizer is a high-grade form of slow release fertilizer, mainly by coating a film of film and additive on the exterior of nitrogen-phosphorus-potassium compound fertilizer or full nutrient fertilizer added with trace elements so as to attain the goal of prolonging decomposition and release time of fertilizer and raising utilization rate of fertilizer nutrients.
In the release mode of the controlled release fertilizer, nutrients of water-soluble fertilizer wrapped in the outer wrapping film are released slowly, when coated fertilizer particles contact moist soil, moisture in the soil permeates into the fertilizer through the wrapping film, so that part of the fertilizer is dissolved, and the part of the water-soluble nutrients diffuse outwards slowly and continuously through micropores on the wrapping film.
Compared with common fertilizers, the controlled release fertilizer has the following advantages: (1) improve the utilization rate of the fertilizer, reduce the fertilizer consumption: the controlled release fertilizer has a slow release effect, so that the gas state and leaching loss of the fertilizer can be reduced, and the utilization efficiency of the fertilizer is improved; (2) reduce fertilization number of times, save labour: due to the lack of labor in rural areas or the lack of water, untimely water supply and the like, crop fertilization is simplified day by day, one-time fertilization of crops is quite common, the release mode of the fertilizer in the crop growth season can be designed in advance for the controlled release fertilizer, so that the fertilizer nutrient release rule is consistent with the crop nutrient absorption, and the one-time fertilization meets the requirement of the whole growth season of the crops; (3) The controlled release fertilizer can also be used for no-tillage and soilless culture, seeds and the fertilizer are sown together, and irrigation is convenient; (4) Can reduce crop diseases and improve the quality of agricultural products: the crop diseases and the product quality are related to the nitrogen fertilizer dosage, and the excessive absorption of the nitrogen by the crops can be prevented by applying the controlled-release fertilizer, so that the effects of inhibiting the diseases and improving the quality are achieved.
However, controlled release fertilizers also exist: difficult degradation of the coating, easy environmental pollution, single coating function, unfavorable crop yield increase and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a special fertilizer for promoting the yield increase of crops; the special fertilizer can recycle wastes, save resources, is green and environment-friendly, can adsorb most heavy metal ions and harmful toxins in soil, effectively improve soil quality, accelerate the growth of crops, improve the quality of the crops and increase the yield of the crops; the fertilizer can also comprehensively supply nutrient elements required by the growth of crops, increase the content of organic matters and microorganisms in soil, and effectively improve the water retention, moisture retention and air permeability of the soil.
In view of the above-mentioned deficiencies in the prior art, a second object of the present invention is to provide a method for preparing a special fertilizer for promoting the yield increase of crops; the preparation method is simple, easy to control and stable in synergistic effect.
In order to achieve the above purpose, the solution adopted by the invention is as follows:
the invention provides a special fertilizer for promoting crop yield increase, which comprises a coating; the raw materials of the coating comprise, by mass, 1:2-4:2-4 of biomass carbon powder, earthworm excrement powder and wheat stalk powder; the preparation method of the biomass carbon powder comprises the following steps: cleaning the waste biomass, drying for the first time, placing the waste biomass in a tubular atmosphere furnace, introducing argon, heating to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 Soaking the KOH solution for 24 hours, then placing the KOH solution in a tubular atmosphere furnace, introducing argon, heating to 800 ℃, reacting for 1 hour, cooling to room temperature, cleaning to be neutral, then filtering and cleaning with deionized water, and drying for the second time to obtain the biomass carbon powder.
Further, in a preferred embodiment of the present invention, the conditions of the first drying are: and (3) drying the waste biomass in a drying oven at 60 ℃ for 48 hours.
Further, in the preferred embodiment of the present invention, the flow rate of argon gas is 40cm 3 min -1 。
Further, in a preferred embodiment of the present invention, a concentration of 1.0mol L is used -1 The HCl of (1) washes the pretreated biomass.
Further, in a preferred embodiment of the present invention, the conditions of the second drying are: and (3) drying the pretreated biomass in a drying oven at 60 ℃ for 10 hours.
Further, in the preferred embodiment of the present invention, the biomass comprises pomelo peel, orange peel, and pitaya peel.
The invention also provides a preparation method of the special fertilizer for promoting the yield increase of crops, which comprises the following steps of (1) preparation of a coating aqueous dispersion: putting water, biomass carbon powder, earthworm excrement powder and wheat stalk powder into a reaction kettle in proportion, wherein the mass ratio of the water to the biomass carbon powder is (22-24): 1; stirring and mixing, heating to 70-80 deg.C, and gelatinizing; then adding N, N/-methylene-bisacrylamide, and refluxing at 90-100 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene-bisacrylamide to the biomass carbon powder is 3-4:100, respectively; (2) fertilizer preparation: preheating the granular fertilizer in a boiling type or drum type fluidized bed at the temperature of 60-80 ℃; coating the surface of the preheated granular fertilizer with the coating water dispersion by a spraying mode to prepare the special fertilizer.
Further, in a preferred embodiment of the present invention, the grain size of the earthworm excrement powder and the wheat straw is 30 μm.
Further, in a preferred embodiment of the invention, the particle size of the granulated fertilizer is 3-4mm.
The special fertilizer for promoting the yield increase of crops and the preparation method thereof provided by the invention have the beneficial effects that:
(1) The raw materials of the coating provided by the invention comprise biomass carbon powder, animal waste powder and wheat stalks, and the raw materials are recycled by adopting wastes, so that the coating is green and environment-friendly, is easy to degrade and saves resources.
(2) The biomass carbon powder prepared by the preparation method provided by the invention has the adsorption effect obviously superior to that of common carbon powder, and has huge specific surface area and a large amount of porous structures; the wheat stalk powder and the animal waste powder can be more uniformly dispersed on the biomass carbon powder, and the fertilizer effect is better exerted.
(3) The biomass carbon powder is used as a coating raw material of the special fertilizer, can absorb a large amount of heavy metal ions such as mercury, lead, cadmium, arsenic, fluorine and the like in soil and harmful substances such as chloride, cyanide, residual pesticide, trichloromethane and the like, thereby effectively improving the soil quality of the soil; the wheat straw is rich in abundant cellulose, so that a proper habitat environment is provided for the propagation of microorganisms, and meanwhile, the water absorption, the void degree and the drainage of soil can be improved; the animal waste contains various nutrient components, and organic matters in the animal waste can be directly absorbed and utilized by plants and can supplement nutrient components lacking in the field; the combination of the three components can obviously promote the growth of crops, improve the quality of the crops and increase the yield of the crops.
(4) According to the preparation method of the coating, the cross-linking agent is added under the conditions, so that the coating raw materials can be well bonded, and collapse or easy damage is avoided; the preparation method is simple, easy to control and stable in synergistic effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 mu m and wheat stalk powder with the particle size of 30 mu m are mixed according to the mass ratio of 22:1:2:4, placing the mixture into a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying in a drying oven at 60 deg.C for 48 hr, placing in a tubular atmosphere furnace, and introducing gas at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 In KOH solution ofAfter 24 hours, placing the mixture in a tubular atmosphere furnace, introducing argon, heating to 800 ℃, reacting for 1 hour, cooling to room temperature, and then adopting 1.0mol L -1 And (3) washing the mixture to be neutral by using HCl, then filtering and washing the mixture by using deionized water, and drying the mixture for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene-bisacrylamide and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the biomass carbon powder is 3:100.
(2) Preparing a fertilizer: preheating granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Example 2
The embodiment provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the grain size of 30 microns and wheat stalk powder with the grain size of 30 microns are mixed according to the mass ratio of 24:1:4:2, placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying at 60 deg.C for 48 hr in drying oven, and introducing into a tubular atmosphere furnace at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is raised to 800 ℃, after the reaction is carried out for 1 hour, the mixture is cooled to room temperature and then 1.0mol L of the mixture is adopted -1 And (3) washing the mixture to be neutral by using HCl, then filtering and washing the mixture by using deionized water, and drying the mixture for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene bisacrylamide, and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the biomass carbon powder is 4:100.
(2) Preparing a fertilizer: preheating granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Example 3
The embodiment provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 mu m and wheat stalk powder with the particle size of 30 mu m are mixed according to the mass ratio of 23:1:3:3 placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying at 60 deg.C for 48 hr in drying oven, and introducing into a tubular atmosphere furnace at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass to the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is increased to 800 ℃, the reaction is carried out for 1 hour, the mixture is cooled to the room temperature, and 1.0mol L of the mixture is adopted -1 And (3) washing the obtained product to be neutral by using HCl, then filtering and washing the product by using deionized water, and drying the product for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene-bisacrylamide and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene-bis-acrylamide to the biomass carbon powder is 3.5:100.
(2) Preparing a fertilizer: preheating granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Example 4
The embodiment provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 mu m and wheat stalk powder with the particle size of 30 mu m are mixed according to the mass ratio of 23:1:3:3 placing the mixture in a reaction kettle; stirring, mixing, heating to 70 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying at 60 deg.C for 48 hr in drying oven, and introducing into a tubular atmosphere furnace at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is increased to 800 ℃, the reaction is carried out for 1 hour, the mixture is cooled to the room temperature, and 1.0mol L of the mixture is adopted -1 And (3) washing the obtained product to be neutral by using HCl, then filtering and washing the product by using deionized water, and drying the product for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene bisacrylamide, and refluxing at 90 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene-bis-acrylamide to the biomass carbon powder is 3.5:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the grain diameter of 4mm in a boiling type or drum type fluidized bed at the temperature of 60 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Example 5
The embodiment provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 microns and wheat stalk powder with the particle size of 30 microns are mixed according to the mass ratio of 23:1:3:3 placing the mixture in a reaction kettle; stirring, mixing, heating to 80 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying at 60 deg.C for 48 hr in drying oven, and introducing into a tubular atmosphere furnace at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3Pretreating biomass at a concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is raised to 800 ℃, after the reaction is carried out for 1 hour, the mixture is cooled to room temperature and then 1.0mol L of the mixture is adopted -1 And (3) washing the mixture to be neutral by using HCl, then filtering and washing the mixture by using deionized water, and drying the mixture for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene bisacrylamide, and refluxing at 100 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the biomass carbon powder is 3.5:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the grain diameter of 4mm in a boiling type or drum type fluidized bed at the temperature of 80 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Comparative example 1
The comparative example provides a preparation method of a special fertilizer for promoting crop yield increase, comprising the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 microns and wheat stalk powder with the particle size of 30 microns are mixed according to the mass ratio of 20:1:1:5 placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying at 60 deg.C for 48 hr in drying oven, and introducing into a tubular atmosphere furnace at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is increased to 800 ℃, the reaction is carried out for 1 hour, the mixture is cooled to the room temperature, and 1.0mol L of the mixture is adopted -1 And (3) washing the obtained product to be neutral by using HCl, then filtering and washing the product by using deionized water, and drying the product for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene-bisacrylamide and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene-bisacrylamide to the biomass carbon powder is 2:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Comparative example 2
The comparative example provides a preparation method of a special fertilizer for promoting crop yield increase, comprising the following steps:
(1) Preparing a coating water dispersion liquid: water, biomass carbon powder, earthworm excrement powder with the particle size of 30 mu m and wheat stalk powder with the particle size of 30 mu m are mixed according to the mass ratio of 23:1:3:3 placing the mixture in a reaction kettle; stirring, mixing, heating to 65 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying in a drying oven at 60 deg.C for 48 hr, placing in a tubular atmosphere furnace, and introducing gas at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is raised to 800 ℃, after the reaction is carried out for 1 hour, the mixture is cooled to room temperature and then 1.0mol L of the mixture is adopted -1 And (3) washing the mixture to be neutral by using HCl, then filtering and washing the mixture by using deionized water, and drying the mixture for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene bisacrylamide and refluxing at 105 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene-bis-acrylamide to the biomass carbon powder is 3.5:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the particle size of 5mm in a boiling type or drum type fluidized bed at the temperature of 85 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Comparative example 3
The comparative example provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: water and biomass carbon powder are mixed according to the mass ratio of 23:7, placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
The preparation method of the biomass carbon powder comprises the following steps: cleaning waste biomass, drying in a drying oven at 60 deg.C for 48 hr, placing in a tubular atmosphere furnace, and introducing gas at flow rate of 40cm 3 min -1 Heating the argon to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, pretreating the biomass at the concentration of 2.0mol L -1 After the KOH solution is soaked for 24 hours, the mixture is placed in a tubular atmosphere furnace and argon is introduced, the temperature is raised to 800 ℃, after the reaction is carried out for 1 hour, the mixture is cooled to room temperature and then 1.0mol L of the mixture is adopted -1 And (3) washing the mixture to be neutral by using HCl, then filtering and washing the mixture by using deionized water, and drying the mixture for 10 hours in a drying oven at the temperature of 60 ℃ to obtain the biomass carbon powder.
Then adding N, N/-methylene-bisacrylamide and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the biomass carbon powder is 3.5:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the surface of the preheated granular fertilizer with the coating water dispersion by a spraying mode to prepare the special fertilizer.
Comparative example 4
The comparative example provides a preparation method of a special fertilizer for promoting crop yield increase, which comprises the following steps:
(1) Preparing a coating water dispersion liquid: mixing water and earthworm excrement powder with the grain size of 30 mu m according to the mass ratio of 23:7, placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
Then adding N, N/-methylene bisacrylamide, and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the earthworm excrement powder is 3.5:100.
(2) Preparing a fertilizer: preheating a granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the surface of the preheated granular fertilizer with the coating water dispersion by a spraying mode to prepare the special fertilizer.
Comparative example 5
The comparative example provides a preparation method of a special fertilizer for promoting crop yield increase, comprising the following steps:
(1) Preparing a coating water dispersion liquid: mixing water and wheat stalk powder with the grain diameter of 30 mu m according to the mass ratio of 23:7, placing the mixture in a reaction kettle; stirring, mixing, heating to 75 deg.C, and gelatinizing.
Then adding N, N/-methylene bisacrylamide, and refluxing at 95 ℃; stirring, cooling and discharging to obtain a coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the wheat stalk powder is 3.5:100.
(2) Preparing a fertilizer: preheating granular fertilizer with the grain diameter of 3mm in a boiling type or drum type fluidized bed at the temperature of 70 ℃; coating the coating water dispersion liquid on the surface of the preheated granulated fertilizer in a spraying way to prepare the special fertilizer.
Experimental example 1
The field test was carried out in the city of Sichuan province Pi city district. The special fertilizers provided in examples 1-5 and comparative examples 1-6 of the present application were set as experimental groups 1-10, and a commercially available controlled release fertilizer (tevoruo) was set as a control group;
the special fertilizer provided by the experimental group 11 and the controlled-release fertilizer provided by the control group are respectively applied to each mu of the plot, the fertilizer is applied once during sowing of summer corn, and after 90 days, the yield and the yield per mu (the experimental group compared with the control group) are shown in table 1:
TABLE 1
| Group number | Mu yield (kg) | Increase (%) |
| Control group | 552 | / |
| Experimental group 1 | 660 | 19.6 |
| Experimental group 2 | 659 | 19.4 |
| Experimental group 3 | 664 | 20.3 |
| Experimental group 4 | 656 | 18.8 |
| Experimental group 5 | 654 | 18.5 |
| Experimental group 6 | 572 | 3.6 |
| Experimental group 7 | 581 | 5.3 |
| Experimental group 8 | 600 | 8.7 |
| Experimental group 9 | 502 | / |
| Experimental group 10 | 510 | / |
As can be seen from the data in Table 1, the special fertilizers provided in examples 1-5 of the present application can significantly improve crop yield compared to the commercial controlled release fertilizers by applying the same amount of fertilizer in the same area and within the same release time. The proportion of the coating raw materials of the comparative example 1 (experimental group 6) is not within the protection range of the application, and compared with a control group, the yield of the crops can be improved, but the improvement is not obvious; comparative example 2 (experimental group 7) the preparation process parameters of the special fertilizer are not within the protection range of the application, and compared with the control group, the improvement of the special fertilizer is not obvious although the crop yield can be improved; the raw material of the coating of the comparative example 3 (experimental group 8) only uses biomass carbon powder, and compared with a control group, the yield of crops can be improved, but the improvement is not obvious; comparative example 4 and comparative example 5 (experimental groups 9 to 10) the coated raw material using only the animal manure powder or the wheat straw powder, rather decreased the yield compared to the control group.
The results show that the raw materials provided by the application can play a role in synergy, so that the soil environment is greatly improved, and the crop yield is remarkably improved. The proportion of each raw material and the preparation process condition of the coating provided by the application have a promoting effect on the final crop yield.
In conclusion, the special fertilizer for promoting the yield increase of crops provided by the invention is adopted; the special fertilizer can recycle wastes, save resources, is green and environment-friendly, can adsorb most heavy metal ions and harmful toxins in soil, effectively improves soil quality, accelerates growth of crops, improves crop quality and increases crop yield; the fertilizer can also comprehensively supply nutrient elements required by the growth of crops, increase the content of organic matters and microorganisms in soil, and effectively improve the water retention, moisture retention and air permeability of the soil; the invention provides a preparation method of a special fertilizer for promoting crop yield increase; the preparation method is simple, easy to control and stable in synergistic effect.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A special fertilizer for promoting crop yield increase is characterized in that: comprises a coating; the raw materials of the coating comprise, by mass, 1:2-4:2-4 of biomass carbon powder, earthworm excrement powder and wheat stalk powder;
the preparation method of the biomass carbon powder comprises the following steps: cleaning the waste biomass, drying for the first time, placing the waste biomass in a tubular atmosphere furnace, introducing argon, heating to 500 ℃, and reacting for 1h to obtain pretreated biomass; then, according to the mass ratio of 1:3, putting the pretreated biomass into a solution with the concentration of 2.0mol L -1 Soaking in the KOH solution for 24 hours, then placing in the tubular atmosphere furnace, introducing the argon, heating to 800 ℃, reacting for 1 hour, cooling to room temperature, cleaning to neutrality, then filtering and cleaning with deionized water, and drying for the second time to obtain the biomass carbon powder.
2. A specialty fertilizer for promoting crop yield increase according to claim 1, wherein said specialty fertilizer comprises: the conditions of the first drying are as follows: and (3) drying the waste biomass in a drying oven at 60 ℃ for 48h.
3. A specialty fertilizer for promoting crop yield increase according to claim 1, wherein said specialty fertilizer comprises: the flow velocity of the argon is 40cm 3 min -1 。
4. A specialty fertilizer for promoting crop yield increase according to claim 1, wherein said specialty fertilizer comprises: with a concentration of 1.0mol L -1 Is in the form of HClWashing the pretreated biomass.
5. A specialty fertilizer for promoting crop yield increase according to claim 1, wherein said specialty fertilizer comprises: the conditions of the second drying are as follows: and (3) drying the pretreated biomass in a drying oven at 60 ℃ for 10 hours.
6. A specialty fertilizer for promoting crop yield increase according to claim 1, wherein said specialty fertilizer comprises: the biomass comprises shaddock peel, orange peel and dragon fruit peel.
7. A method for preparing a special fertilizer for promoting crop yield increase according to any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:
(1) Preparing a coating water dispersion liquid: putting water, the biomass carbon powder, the earthworm excrement powder and the wheat stalk powder into a reaction kettle in proportion, wherein the mass ratio of the water to the biomass carbon powder is (22-24): 1; stirring, mixing, heating to 70-80 deg.C, and gelatinizing; then adding N, N/-methylene-bisacrylamide, and refluxing at 90-100 ℃; stirring, cooling and discharging to obtain the coating water dispersion; the mass ratio of the N, N/-methylene bisacrylamide to the biomass carbon powder is 3-4:100;
(2) Preparing a fertilizer: preheating the granular fertilizer in a boiling type or drum type fluidized bed at the temperature of 60-80 ℃; and coating the coating aqueous dispersion on the surface of the preheated granular fertilizer in a spraying manner to obtain the special fertilizer.
8. The method for preparing a special fertilizer for promoting crop yield increase according to claim 7, wherein the method comprises the following steps: the grain sizes of the earthworm excrement powder and the wheat straw are 30 mu m.
9. The method for preparing a special fertilizer for promoting crop yield increase according to claim 7, wherein the method comprises the following steps: the particle size of the granular fertilizer is 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211008156.5A CN115286454B (en) | 2022-08-22 | 2022-08-22 | Special fertilizer for promoting crop yield increase and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211008156.5A CN115286454B (en) | 2022-08-22 | 2022-08-22 | Special fertilizer for promoting crop yield increase and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115286454A true CN115286454A (en) | 2022-11-04 |
| CN115286454B CN115286454B (en) | 2023-10-13 |
Family
ID=83829969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211008156.5A Active CN115286454B (en) | 2022-08-22 | 2022-08-22 | Special fertilizer for promoting crop yield increase and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115286454B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752285A (en) * | 2014-01-08 | 2014-04-30 | 农业部环境保护科研监测所 | Absorbent material for water body purification and biological carbon brick |
| WO2014091279A1 (en) * | 2012-12-12 | 2014-06-19 | Universidad De La Frontera | Controlled-release nitrogen fertilizer using biochar as a renewable support matrix |
| CN103951531A (en) * | 2014-04-03 | 2014-07-30 | 浙江理工大学 | Environmentally friendly charcoal-based water-retention slow-release fertilizer, preparation method and application thereof |
| CN104829304A (en) * | 2015-04-11 | 2015-08-12 | 铜陵家宴生态农业发展有限公司 | Coating-type charing straw fertilizer and preparation method thereof |
| CN107473805A (en) * | 2016-12-27 | 2017-12-15 | 盐城工学院 | A kind of straw charcoal base high water absorption slow release fertilizer and preparation method thereof |
| CN107698316A (en) * | 2017-10-20 | 2018-02-16 | 武汉轻工大学 | A kind of coated fertilizer for improveing heavy-metal contaminated soil and preparation method thereof |
| CN110156533A (en) * | 2019-05-16 | 2019-08-23 | 西北农林科技大学 | It is a kind of efficiently containing the preparation method and applications of phosphorus product |
| CN112552112A (en) * | 2020-12-10 | 2021-03-26 | 南阳师范学院 | Modified high-molecular slow-release nitro compound fertilizer and preparation method thereof |
| CN112939678A (en) * | 2020-12-31 | 2021-06-11 | 塔里木大学 | Long-acting slow-release compound fertilizer and preparation method thereof |
-
2022
- 2022-08-22 CN CN202211008156.5A patent/CN115286454B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014091279A1 (en) * | 2012-12-12 | 2014-06-19 | Universidad De La Frontera | Controlled-release nitrogen fertilizer using biochar as a renewable support matrix |
| CN103752285A (en) * | 2014-01-08 | 2014-04-30 | 农业部环境保护科研监测所 | Absorbent material for water body purification and biological carbon brick |
| CN103951531A (en) * | 2014-04-03 | 2014-07-30 | 浙江理工大学 | Environmentally friendly charcoal-based water-retention slow-release fertilizer, preparation method and application thereof |
| CN104829304A (en) * | 2015-04-11 | 2015-08-12 | 铜陵家宴生态农业发展有限公司 | Coating-type charing straw fertilizer and preparation method thereof |
| CN107473805A (en) * | 2016-12-27 | 2017-12-15 | 盐城工学院 | A kind of straw charcoal base high water absorption slow release fertilizer and preparation method thereof |
| CN107698316A (en) * | 2017-10-20 | 2018-02-16 | 武汉轻工大学 | A kind of coated fertilizer for improveing heavy-metal contaminated soil and preparation method thereof |
| CN110156533A (en) * | 2019-05-16 | 2019-08-23 | 西北农林科技大学 | It is a kind of efficiently containing the preparation method and applications of phosphorus product |
| CN112552112A (en) * | 2020-12-10 | 2021-03-26 | 南阳师范学院 | Modified high-molecular slow-release nitro compound fertilizer and preparation method thereof |
| CN112939678A (en) * | 2020-12-31 | 2021-06-11 | 塔里木大学 | Long-acting slow-release compound fertilizer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115286454B (en) | 2023-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100441090C (en) | Melon vegetable grow seedling ground substance | |
| CN109400372B (en) | Biochar soil improvement organic fertilizer and preparation method thereof | |
| CN103044146A (en) | Complex control type long-acting controlled-release organic and inorganic biological fertilizer | |
| CN109400397B (en) | Water-retention controlled-release biological compound fertilizer and preparation method thereof | |
| CN109534919A (en) | A kind of microorganism slow-release compound fertilizer and preparation method thereof | |
| CN109956824B (en) | Oil peony organic particle slow-release fertilizer and preparation method thereof | |
| CN110818507A (en) | Bio-organic fertilizer and processing method thereof | |
| CN105000974A (en) | Magnetic controlled-release fertilizer capable of improving soil water release and fertilizer maintenance capacity, and preparation method thereof | |
| CN111285742A (en) | Special biofertilizer for moderate and severe saline-alkali soil and preparation method thereof | |
| CN109429996B (en) | Organic nutrient soil | |
| CN112062634A (en) | Rice slow-release fertilizer and preparation and application methods thereof | |
| CN113122531A (en) | Efficient microbial agent for solving continuous cropping obstacles | |
| CN112624866A (en) | Organic slow release fertilizer using livestock and poultry manure and straw as raw materials | |
| CN111574290A (en) | Efficient environment-friendly fertilizer and preparation method thereof | |
| WO2024032339A1 (en) | Preparation method for orchard base fertilizer and application method therefor | |
| CN112028671A (en) | Production process of anti-soaking decomposition columnar granulated fertilizer | |
| CN111943779A (en) | Special fertilizer for ecological restoration and soil improvement of saline-alkali soil and preparation method thereof | |
| CN109516838B (en) | Water-retention synergistic compound fertilizer and preparation method thereof | |
| CN109627126B (en) | High-bioactivity slow release fertilizer and preparation method thereof | |
| CN110590454A (en) | Slow/controlled release fertilizer and preparation method thereof | |
| CN115286454B (en) | Special fertilizer for promoting crop yield increase and preparation method thereof | |
| CN110663465A (en) | Pepper seedling growing method | |
| CN115010538A (en) | Two-component composite microorganism water-retention temperature-control slow-release fertilizer and preparation method and application thereof | |
| CN115093297A (en) | Compound fertilizer for preventing soil hardening and preparation method thereof | |
| CN112592221A (en) | Preparation method of novel organic straw fertilizer |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |