CN112624862B - Efficient and stable green ammonium nitrogen fertilizer special for brown soil and preparation method thereof - Google Patents

Efficient and stable green ammonium nitrogen fertilizer special for brown soil and preparation method thereof Download PDF

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CN112624862B
CN112624862B CN202011589583.8A CN202011589583A CN112624862B CN 112624862 B CN112624862 B CN 112624862B CN 202011589583 A CN202011589583 A CN 202011589583A CN 112624862 B CN112624862 B CN 112624862B
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fertilizer
nitrogen
ammonium
nitrogen fertilizer
ammonium nitrogen
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CN112624862A (en
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李东坡
油伦成
武志杰
宫平
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Institute of Applied Ecology of CAS
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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
    • 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
    • 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 relates to a high-efficiency stable green ammonium nitrogen fertilizer, in particular to a high-efficiency stable green nitrogen fertilizer containing ammonium nitrogen special for brown soil and a preparation method thereof. The fertilizer is ammonium nitrogen fertilizer and biochemical inhibitor, and the weight ratio of the fertilizer to the biochemical inhibitor is 1:0.0003-0.1; wherein the biochemical inhibitor is a single biochemical inhibitor or a combined biochemical inhibitor; the single biochemical inhibitor is CP, DCD or AM; the combined biochemical inhibitor is a combination of CP and DCD, a combination of CP and AM, a combination of DCD and AM or a combination of DMPP and DCD, and the mass ratio of the two biochemical inhibitors in each combination is 0.1-1. The product of the invention has high efficiency, low cost, environmental protection and environmental protection. The raw material nitrification inhibitor adopted by the invention has low dosage, the main inhibitor has the function of promoting the growth of crops, and the main inhibitor is quickly decomposed in soil and is decomposed in the current year without any residue.

Description

Efficient and stable green ammonium nitrogen fertilizer special for brown soil and preparation method thereof
Technical Field
The invention relates to an efficient and stable green ammonium nitrogen fertilizer, in particular to an efficient and stable green nitrogen fertilizer containing ammonium nitrogen special for brown soil and a preparation method thereof.
Background
At present, the ammonium nitrogen fertilizer is still widely used in agricultural production practice, and accounts for more than 24 percent of the total amount of the agricultural nitrogen fertilizer, and particularly, the application amount of ammonium chloride, ammonium sulfate and ammonium bicarbonate is larger. The nitrogen fertilizer is used in a large amount in the crop cultivation and compound fertilizer processing processes, some are needed by the physiological characteristics and excellent quality of crops, and some are used by farmers, but the currently applied ammonium nitrogen fertilizer is still a common ammonium nitrogen fertilizer, the nitrogen utilization rate of the ammonium nitrogen fertilizer is very low, sufficient attention is not paid to improving the performance of the part of nitrogen fertilizer, the stability and the utilization rate of the nitrogen fertilizer are improved, and the nitrogen fertilizer is necessary for improving the utilization rate of the whole nitrogen fertilizer in China, reducing the application amount of the nitrogen fertilizer and improving the efficient utilization of the part of the form nitrogen fertilizer.
Researches show that different nitrogen fertilizers, particularly nitrogen fertilizers with different stability, have completely different effectiveness in different types of soil, and some effects are even not different from that of common nitrogen fertilizers, mainly because different biochemical inhibitors have different effects on different fertilizers, and the different biochemical inhibitors have greatly different effects in different types of soil or soils with different physicochemical properties (soil texture, soil pore space, soil organic matter, pH value and the like) and show different nitrification inhibition effects, and some effects are even completely opposite to each other. Therefore, the special high-efficiency stable nitrogen fertilizer developed aiming at different soils is the development trend of the stable nitrogen fertilizer in the future and is also a key technology for the research and development of the nitrogen fertilizer industry.
However, the brown soil is one of the main types of soil in China, the brown soil area is the main grain production area in China, the nitrogen fertilizer consumption is large, especially the ammonium nitrogen fertilizer consumption is large, the soil in the brown soil area is seriously degraded at present, the grain production capacity is obviously reduced, in order to protect and improve the quality of brown soil cultivated land, the grain productivity is improved, the environmental pollution is reduced, the waste of nitrogen fertilizer resources is reduced, the nitrogen fertilizer utilization rate in the brown soil area is improved, the special, low-cost, high-efficiency and high-stability ammonium nitrogen fertilizer is urgently developed aiming at the brown soil in China, and meanwhile, the scientific support is provided for the industrial development and technical promotion of the ammonium nitrogen fertilizer.
Disclosure of Invention
The invention aims to provide a special high-efficiency stable green nitrogen fertilizer containing ammonium nitrogen for brown soil and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-efficiency stable green ammonium nitrogen fertilizer special for brown soil is prepared from an ammonium nitrogen fertilizer and a biochemical inhibitor, wherein the weight part ratio of the ammonium nitrogen fertilizer to the biochemical inhibitor is 1:0.0003-0.1; wherein the biochemical inhibitor is a single biochemical inhibitor or a combined biochemical inhibitor; the single biochemical inhibitor is CP, DCD or AM; the combined biochemical inhibitor is a combination of CP and DCD, a combination of CP and AM, a combination of DCD and AM or a combination of DMPP and DCD, and the mass ratio of the two biochemical inhibitors in each combination is 0.1-1.
The nitrification inhibitors CP (2-chloro-6 (trichloromethyl) -pyridine), DCD (dicyanodiamine), DMPP (3, 4-dimethylpyrazole phosphate), AM (2-amino-4-chloro-6-methylpyrimidine).
The ammonium nitrogen fertilizer is prepared from solid and liquid fertilizers or chemical products used in agricultural production.
The ammonium nitrogen fertilizer is prepared from the ammonium nitrogen fertilizer; wherein the ammonium nitrogen fertilizer is ammonium chloride, ammonium sulfate, ammonium bicarbonate, liquid ammonia (ammonia water), monoammonium phosphate or diammonium phosphate.
A method for preparing efficient and stable green ammonium nitrogen fertilizer special for brown soil comprises the steps of uniformly mixing the ammonium nitrogen fertilizer with a single biochemical inhibitor or a combined biochemical inhibitor according to different states of the ammonium nitrogen fertilizer according to the proportion and then granulating.
Uniformly spraying the single biochemical inhibitor or the combined biochemical inhibitor suspension solution on the surface of the granular ammonium nitrogen fertilizer in a fluidized state through a fluidized bed according to the proportion for granulation, or uniformly mixing the granular ammonium nitrogen fertilizer and the single biochemical inhibitor or the combined biochemical inhibitor for granulation;
uniformly mixing the powdery ammonium nitrogen fertilizer raw material and a single biochemical inhibitor or a combined biochemical inhibitor according to the proportion, and granulating;
according to the proportion, the single biochemical inhibitor or the combined biochemical inhibitor is mixed and stirred evenly, and then is directly injected into the ammonium nitrogen fertilizer to be mixed evenly, or is mixed and then granulated.
The fluidized bed is adopted for uniform spraying, the air inlet temperature in the fluidized bed is controlled within 60 ℃, the pressure of compressed air is 0.35-0.65 Pa, and the atomizing pressure of a nozzle is 0.05-0.15 Pa.
And adding one or more of phosphorus, potassium and trace elements into the ammonium nitrogen fertilizer, uniformly mixing, and preparing the special multi-element high-efficiency stable ammonium-based compound fertilizer for the brown soil through mechanical granulation.
The invention has the following advantages:
1. the fertilizer is a high-efficiency stable green ammonium nitrogen fertilizer special for the brown soil with the pH value of 5.6-10.5, and is prepared by fully mixing high-efficiency nitrification inhibitors CP, DCD and AM with an ammonium nitrogen fertilizer, or mixing the nitrification inhibitors CP and any one group of nitrification inhibitors in the combination of DCD, CP and AM, DCD and AM, DMPP and DCD nitrification inhibitors, and then mixing the mixture with the ammonium nitrogen fertilizer.
2. The efficient and stable green ammonium nitrogen fertilizer of the invention utilizes different nitrification inhibitors to mix with the ammonium nitrogen fertilizer, so that the action time of CP, DCD and AM is prolonged, the activities of the nitrification inhibitors combined with the nitrification inhibitors for inhibiting ammonia oxidizing bacteria and ammonia oxidizing archaea are simultaneously stimulated, and the inhibiting activity of the nitrification inhibitors is kept for a long time, thereby obviously improving the absorption and utilization effects of crops on the ammonium nitrogen fertilizer nitrogen, increasing the absorption of plants on the ammonium nitrogen fertilizer nitrogen, improving the utilization rate of the nitrogen fertilizer of the ammonium nitrogen fertilizer, increasing the utilization rate of the nitrogen fertilizer to 50-80%, reducing the fertilizer dosage by 10-50%, and being the most ideal efficient and stable green ammonium nitrogen fertilizer product for the special ammonium nitrogen fertilizer for the brown soil at present.
3. The fertilizer can prolong the retention time of high-concentration ammonium nitrogen in soil to more than 100 days, prolong the effective period and improve the utilization rate, can provide guarantee for plants to absorb nutrient elements such as phosphorus, potassium and the like for a longer time, can promote crops to absorb other nutrient elements, and increases the content of nutrient substances such as protein, amino acid, fat and the like in agricultural products. The absorption promoting rate can reach 3 to 5 times. The nitrogen absorption rate can be improved by more than 60%, the phosphorus absorption rate is improved by more than 5%, the potassium absorption rate is improved by more than 20%, and the trace element absorption rate is improved by 10% -15%.
4. The nitrification inhibitor CP used by the fertilizer has the effects of promoting the growth of crops and absorbing soil nutrients, is matched with other nitrification inhibitors to prolong the fertilizer effect of the ammonium nitrogen fertilizer, has additive and complementary effects with other nitrification inhibitors, obviously prolongs the fertilizer effective period of the ammonium nitrogen fertilizer, and fully exerts the synergy of the nitrification inhibitor CP and other nitrification inhibitors on the inhibition of ammonia oxidation and synergism or the effect of promoting the absorption and utilization of the crops.
5. The fertilizer realizes that the seed manure is sown simultaneously and the nitrogen fertilizer is applied at one time by the base, can meet the requirement of the whole growth season of the brown soil crops on nitrogen, and saves labor and time in agricultural production. Greatly reducing the labor intensity and production cost of farmers.
6. The product of the invention has high efficiency, low cost, environmental protection and environmental protection. The raw material nitrification inhibitor adopted by the invention has low dosage, and the main inhibitor has the function of promoting the growth of crops, is quickly decomposed in soil, is decomposed in the same year and has no residue.
7. The fertilizer is simple to prepare and operate, easy to realize, and wide and easily available in raw material.
8. The product of the invention has high specificity and good effect. Is suitable for various plants planted on the brown soil. The fertilizer has obvious disease-resistant, drought-resistant and lodging-resistant effects on crops after being applied to soil, can effectively improve the nutrient storage capacity of the soil, has a certain effect on succeeding crops, improves the fertility, and has the effect of fertilizing the brown soil. The normal use of the product can reduce the application of ammonium nitrogen fertilizer by 15-50%, increase the yield of grains by 10-30%, increase the yield of vegetables by 15-30% and increase the yield of cash crops by more than 20%. Obviously improve the quality of crops and improve the commodity grade.
9. Compared with the production of the same urea fertilizer product, the invention has the advantages of low production cost, direct absorption and utilization of crops after the fertilizer enters the soil, easy fixation of nitrogen nutrients in the soil, reduction of loss and lowest cost in the same fertilizer. Can completely replace the coated fertilizer with relatively short fertilizer efficiency period in effective time.
10. The efficient and stable green ammonium nitrogen fertilizer can be used for industrial continuous production, in the operation process flow of the nitrogen fertilizer synthetic industrial production, when the product is in a liquid state or a solid state, an adding device for adding the nitrification inhibitor is additionally arranged in front of a process device, and the nitrification inhibitor or the combined formula is added into the fertilizer raw material product through the device and is uniformly mixed. Is easy to realize industrial mass production.
The specific implementation mode is as follows:
the following examples are presented to further illustrate embodiments of the present invention, and it should be understood that the embodiments described herein are only for purposes of illustration and explanation and are not intended to be limiting.
The special efficient stable green nitrogen fertilizer containing ammonium nitrogen for the brown soil can effectively inhibit the conversion of the ammonium nitrogen in the ammonium nitrogen fertilizer to nitrate nitrogen, slow down the conversion rate, prolong the retention time of an ammonium nitrogen fertilizer in the soil, obviously prolong the effective period of the ammonium nitrogen fertilizer in the brown soil, improve the utilization rate of the ammonium nitrogen fertilizer nitrogen, promote the absorption of nitrogen, phosphorus, potassium and trace element nutrient elements by plants, promote the growth of root systems, strengthen plants, enhance the stress resistance and improve the quality of agricultural products.
Example 1:
the method takes agricultural ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine wettable powder based on 100 parts of ammonium chloride particles.
The preparation method comprises the following steps:
1) Preparing a suspension solution: 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine wettable powder is dissolved in 200ml of water solution and evenly stirred to prepare suspension solution for standby.
2) The method comprises the steps of putting a prepared suspension solution into a fluidized bed liquid tank by utilizing a fluidized bed coating technology, injecting 100 parts of ammonium chloride particles containing 26% of nitrogen into a spray tower from a fertilizer feed inlet for fluidization, and then uniformly coating the suspension solution on the surfaces of the ammonium chloride particles by an atomizing nozzle through a flow controller along with the operation of a fluidized bed, thereby finally preparing the efficient stable green ammonium nitrogen fertilizer containing 25% of nitrogen. The parameters of the fluidized bed operation are that the inlet air temperature is 60 ℃, the pressure of compressed air is 0.35Pa, and the atomization pressure of a spray head is 0.05Pa.
Example 2:
the method takes agricultural ammonium sulfate as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine wettable powder based on 100 parts of ammonium sulfate powder.
The preparation method comprises the following steps:
1) Dissolving 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine wettable powder in 200ml of aqueous solution, and uniformly stirring to prepare a suspension solution for later use.
2) 100 parts of ammonium sulfate powder containing 20.5 percent of nitrogen is injected into a fertilizer mixing tank through a fertilizer feed port, 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine) is scattered into the fertilizer mixing tank, a stirrer is started to stir, when the ammonium sulfate and the CP are uniformly stirred (about 15 minutes), the mixture is lifted to the feed port of an extruder through a bucket elevator, and extrusion granulation is carried out to prepare the green granular nitrogen fertilizer containing 20 percent of nitrogen and with high efficiency and stability, the grain diameter of the green granular nitrogen fertilizer is 2.5-4.8 mm.
Example 3:
the method for preparing the efficient and stable green ammonium nitrogen fertilizer by using the ammonium sulfate as the nitrogen source comprises the following raw materials: based on 100 parts of ammonium sulfate powder, 1 part of a mixture of CP (2-chloro-6 (trichloromethyl) -pyridine and DCD (dicyanodiamide), wherein the mass part ratio of the mixture is 1.
The preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine and 1 part of DCD (dicyanodiamine) are mixed, stirred and stirred uniformly for standby.
2) Adding 100 parts of ammonium sulfate powder containing 20.5% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing the nitrification inhibitor with the ammonium sulfate powder, stirring the mixture, lifting the mixture to a feed inlet of an extruder through a bucket elevator after the mixture is uniformly stirred, and performing extrusion granulation to prepare the green ammonium nitrogen granular nitrogen fertilizer containing 20% of nitrogen and having high-efficiency stability and particle size of 2.5-4.8 mm.
Example 4:
the method takes ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: based on 100 parts of powdery ammonium chloride, 1 part of a mixture of CP (2-chloro-6 (trichloromethyl) -pyridine and DCD (dicyanodiamine), wherein the mixture comprises 1 part by mass of ammonium chloride powder and 25% of nitrogen.
The preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine and 1 part of DCD (dicyanodiamine) are mixed and stirred mechanically or manually, and are used for standby after being stirred uniformly.
2) Adding 100 parts of ammonium chloride powder containing 26% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing the mixed nitrification inhibitor with the ammonium chloride powder, mechanically or manually stirring, and after stirring uniformly, lifting a feed inlet of an extruder through a bucket elevator or manually, and carrying out extrusion granulation to prepare the nitrogen fertilizer containing 25% of high-efficiency stable green ammonium nitrogen particles with the particle size of 2.5-4.8 mm. Compared with the high-efficiency and stable green ammonium nitrogen fertilizer product prepared by independently adding CP, the cost of the added biochemical inhibitor is reduced by 1/2, and the fertilizer efficiency is improved by more than 20% compared with the fertilizer product prepared by independently adding DCD.
Example 5:
the method for preparing the efficient and stable green ammonium nitrogen fertilizer by using the ammonium sulfate as the nitrogen source comprises the following raw materials: based on 100 parts of powdery ammonium sulfate, 1 part of AM (2-amino-4-chloro-6-methylpyrimidine) powder contains 20.5 percent of nitrogen.
The preparation method comprises the following steps:
adding 100 parts of ammonium sulfate powder containing 20.5% of nitrogen into a fertilizer mixing tank, adding 1 part of AM (2-amino-4-chloro-6-methylpyrimidine) nitrification inhibitor powder into the fertilizer mixing tank, mixing with the ammonium sulfate powder, mechanically or manually stirring, uniformly stirring, and then lifting to a feed inlet of an extruder through a bucket elevator or manually, and carrying out extrusion granulation to prepare the high-efficiency stable green ammonium nitrogen granular nitrogen fertilizer containing 20% of nitrogen, with the grain diameter of 2.5-4.8 mm.
Example 6:
the method takes ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: based on 100 parts of powdery ammonium chloride, 1 part of a mixture of CP (2-chloro-6 (trichloromethyl) -pyridine and AM (2-amino-4-chloro-6-methylpyrimidine) is 1.
The preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: mixing 1 part of CP (2-chloro-6 (trichloromethyl) -pyridine and 1 part of AM (2-amino-4-chloro-6-methylpyrimidine), and stirring the mixture mechanically or manually for later use.
2) Adding 100 parts of ammonium chloride powder containing 26% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing the mixed nitrification inhibitor with the ammonium chloride powder, mechanically or manually stirring, and after stirring uniformly, lifting a feed inlet of an extruder through a bucket elevator or manually, and carrying out extrusion granulation to prepare the nitrogen fertilizer containing 25% of high-efficiency stable green ammonium nitrogen particles with the particle size of 2.5-4.8 mm.
Example 7:
the method takes ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: based on 100 parts of powdery ammonium chloride, 1 part of a mixture of DCD (dicyanodiamine) and AM (2-amino-4-chloro-6-methylpyrimidine) in a mass part ratio of 1; wherein the ammonium chloride powder contains 26% nitrogen.
The preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: 1 part of DCD (dicyanodiamine) and 0.5 part of AM (2-amino-4-chloro-6-methylpyrimidine) are mixed and stirred mechanically or manually and are used for standby after being stirred uniformly.
2) Adding 100 parts of ammonium chloride powder containing 26% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing with the ammonium chloride powder, and carrying out mechanical or manual stirring to obtain the high-efficiency stable green ammonium nitrogen granular nitrogen fertilizer containing 25% of nitrogen after uniform stirring.
Example 8:
the method takes ammonium sulfate as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: taking 100 parts of powdery ammonium sulfate as a reference, 1 part of a mixture of DCD (dicyanodiamine) and AM (2-amino-4-chloro-6-methylpyrimidine), wherein the mixture comprises the following components in parts by mass: 1; wherein the ammonium sulfate powder contains 20.5% of nitrogen.
The preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: 0.3 part of DCD (dicyanodiamide) and 1 part of AM (2-amino-4-chloro-6-methylpyrimidine) are mixed and stirred mechanically or manually, and the mixture is used after being stirred uniformly.
2) Adding 100 parts of ammonium sulfate powder containing 20.5% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing the nitrification inhibitor with the ammonium sulfate powder, mechanically or manually stirring, and after uniformly stirring, lifting a feed inlet of an extruder through a bucket elevator or manually, and carrying out extrusion granulation to prepare the high-efficiency stable green ammonium nitrogen granular nitrogen fertilizer containing 20% of nitrogen with the particle size of 2.5-4.8 mm.
Application comparative example 1:
taking the application of the high-efficiency and stable ammonium nitrogen fertilizer product prepared in the example 1 in the planting of corn in the sunward brown soil as an example; meanwhile, an ammonium chloride fertilizer and DMPP are added into an ammonium chloride powder fertilizer separately according to the weight ratio of 1.01 and the preparation method of example 1, and a stable ammonium chloride fertilizer (containing 25% of nitrogen) is prepared to be used as a comparative fertilizer for brown soil planting corn application.
The specific operation is as follows:
the highly effective and stable ammonium nitrogen fertilizer granules prepared in example 1 and phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 )N 16kg，P 2 O 5 10kg、K 2 The high-efficiency stable ammonium nitrogen fertilizer with the amount of O8kg is mixed with the triple superphosphate and the potassium chloride for application, the base fertilizer is applied at one time, and the top dressing is not needed during the growth period of the corn.
Comparative fertilizers made with DMPP were also identical to phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 )N 16kg，P 2 O 5 10kg、K 2 O8kg of stable ammonium nitrogen fertilizer and heavyThe calcium superphosphate and the potassium chloride are mixed and applied, the base fertilizer is applied at one time, and the additional fertilizer is not applied during the growth period of the corn.
The application result shows that: the high-efficiency and stable ammonium nitrogen fertilizer product prepared in example 1 is applied, and the corn yield is 815.61kg/666.7m 2 The corn yield of the stable ammonium nitrogen fertilizer product prepared by applying DMPP is 745.22kg/666.7m 2 And the yield of corn is increased by 9.45% by applying the high-efficiency stable ammonium nitrogen fertilizer. The high-efficiency and stable ammonium nitrogen fertilizer product prepared in the embodiment 1 is applied to the corn leaf concentration rate in the corn filling period, and the corn leaves are dried and mature in the corn harvesting period without fertilizer release; in the corn filling stage, the stable ammonium nitrogen fertilizer product prepared by DMPP is applied, and the leaves of corn plants show the sign of fertilizer loss, and the plants are premature senility when the corn is harvested.
The analysis of soil nutrient content indexes shows that: by applying the product of the example 1, the content of ammonium nitrogen and nitrate nitrogen in the brown soil is increased obviously, and the effect of improving the soil fertility is achieved.
TABLE 1 variation of basic physicochemical Properties of soils to which various nitrogen fertilizers were applied, such as in EXAMPLE 1
Figure BDA0002868513090000071
Application comparative example 2:
taking the application of the high-efficiency stable ammonium nitrogen fertilizer product prepared in the example 2 in the planting of corn in the sunward brown soil as an example; the stable ammonium chloride fertilizer (containing 20% nitrogen) is prepared by adding ammonium sulfate fertilizer and DMPP in the weight ratio of 1.01 to ammonium sulfate powder fertilizer according to the preparation method of example 2, and is used as a comparative fertilizer for brown soil planting corn application.
The specific operation is as follows:
the highly efficient and stable ammonium nitrogen fertilizer granules prepared in example 2 were mixed with phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 )N 16kg，P 2 O 5 10kg、K 2 Mixing and applying high-efficiency stable ammonium nitrogen fertilizer with O8kg amount, heavy calcium superphosphate and potassium chloride, applying one-time base fertilizer, and applying jadeThe rice is not fertilized any more during the growth period.
Comparative fertilizers made with DMPP were also identical to phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 )N 16kg，P 2 O 5 10kg、K 2 The stable ammonium nitrogen fertilizer with the amount of O8kg is mixed with triple superphosphate and potassium chloride for application, the base fertilizer is applied at one time, and topdressing is not carried out any more during the growth period of the corn.
The application result shows that: the high-efficiency stable ammonium nitrogen fertilizer product prepared in the example 2 is applied, and the corn yield is 882.17kg/666.7m 2 The corn yield of the stable ammonium nitrogen fertilizer product prepared by applying DMPP is 753.62kg/666.7m 2 And the yield of corn is increased by 17.06% by applying the high-efficiency stable ammonium nitrogen fertilizer. The high-efficiency and stable ammonium nitrogen fertilizer product prepared in the embodiment 2 is applied to the corn leaf concentration rate in the corn filling period, and the leaves of plants are relatively green and do not lose fertilizer in the corn harvesting period; in the filling period of the corn, the stable ammonium nitrogen fertilizer product prepared by DMPP is applied, the leaves of the corn plants are light yellow, the leaves of the corn plants are already yellow when the corn is harvested, and partial plants show the premature senility symptom and die.
The analysis of soil nutrient content indexes shows that: by applying the product of the example 2, the contents of ammonium nitrogen and nitrate nitrogen in the brown soil are increased, the increase range is large, and the soil fertility is obviously improved.
TABLE 2 variation of basic physicochemical properties of soils with different nitrogen fertilizers, as in example 2
Figure BDA0002868513090000081
Application comparative example 3:
taking the application of the high-efficiency and stable ammonium nitrogen fertilizer product prepared in the example 7 in the planting of corn in the sunward brown soil as an example; the stable ammonium chloride fertilizer (containing 25% nitrogen) is prepared by adding the ammonium chloride fertilizer and CMP (1-carbamyl-3-methylpyrazole) in a weight ratio of 1.
The specific operation is as follows:
the highly efficient and stable ammonium nitrogen fertilizer granules prepared in example 7 were mixed with phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 ) N14 kg (nitrogen reduction 12.5%), P 2 O 5 10kg、K 2 The high-efficiency stable ammonium nitrogen fertilizer with the amount of O8kg is mixed with the triple superphosphate and the potassium chloride for application, the base fertilizer is applied at one time, and the top dressing is not needed during the growth period of the corn.
Comparative fertilizers made with CMP (1-carbamyl-3-methylpyrazole) were also similar to phosphorus (P) 2 O 5 43% by weight potassium superphosphate (K) 2 O60% potassium chloride) fertilizer, namely, the fertilizer is applied per mu (666.7 m) 2 )N 16kg，P 2 O 5 10kg、K 2 The stable ammonium nitrogen fertilizer with the amount of O8kg is mixed with triple superphosphate and potassium chloride for application, the base fertilizer is applied at one time, and topdressing is not carried out any more during the growth period of the corn.
The application result shows that: the high-efficiency and stable ammonium nitrogen fertilizer product prepared in example 7 is applied, and the corn yield is 892.66kg/666.7m 2 The corn yield of the stable ammonium nitrogen fertilizer product prepared by applying CMP (1-carbamyl-3-methylpyrazole) is 801.52kg/666.7m 2 And the yield of corn is increased by 11.37% by applying the high-efficiency stable ammonium nitrogen fertilizer. The high-efficiency and stable ammonium nitrogen fertilizer product prepared in the embodiment 7 is applied to the corn leaf concentration rate in the corn filling period, and the corn leaves are dried and mature in the corn harvesting period without fertilizer release; in the corn filling stage, the leaves of corn plants of the stable ammonium nitrogen fertilizer product prepared by applying CMP (1-carbamyl-3-methylpyrazole) are yellow and have faint yellow color, the corn plants die when the corn is harvested, and part of the plants are lodging.
The analysis of soil fertilizer indexes shows that: by applying the product of the example 7, the contents of ammonium nitrogen and nitrate nitrogen in the brown soil are increased, the increase range is large, the reserve of quick-acting nitrogen in the soil is increased, and the soil fertility is obviously improved.
TABLE 3 variation of the physical and chemical properties of the soils containing different nitrogen fertilizers in the application example 2
Figure BDA0002868513090000082

Claims (3)

1. A high-efficiency stable green ammonium nitrogen fertilizer special for brown soil is characterized in that:
the method takes agricultural ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: 1 part of CP (2-chloro-6-trichloromethyl-pyridine) wettable powder by taking 100 parts of ammonium chloride particles as a reference;
the preparation method comprises the following steps:
1) Preparing a suspension solution: dissolving 1 part of CP (2-chloro-6-trichloromethyl-pyridine) wettable powder into 200ml of aqueous solution, and uniformly stirring to prepare a suspension solution for later use;
2) The method comprises the following steps of (1) putting a prepared suspension solution into a fluidized bed liquid tank by utilizing a fluidized bed coating technology, injecting 100 parts of ammonium chloride particles containing 26% of nitrogen into a fluidized bed from a fertilizer feed inlet for fluidization, and then uniformly coating the suspension solution on the surfaces of the ammonium chloride particles by an atomizing nozzle through a flow controller along with the operation of the fluidized bed, so as to finally prepare the high-efficiency stable green ammonium nitrogen fertilizer containing 25% of nitrogen;
the operating parameters of the fluidized bed are that the inlet air temperature is 60 ℃, the pressure of compressed air is 0.35Pa, and the atomizing pressure of a nozzle is 0.05Pa.
2. A high-efficiency stable green ammonium nitrogen fertilizer special for brown soil is characterized in that:
the method for preparing the high-efficiency stable green ammonium nitrogen fertilizer by using the agricultural ammonium sulfate as the nitrogen source comprises the following raw materials: 1 part of CP (2-chloro-6-trichloromethyl-pyridine) wettable powder by taking 100 parts of ammonium sulfate powder as a reference;
the preparation method comprises the following steps:
1) Dissolving 1 part of CP (2-chloro-6-trichloromethyl-pyridine) wettable powder into 200ml of aqueous solution, and uniformly stirring to prepare a suspension solution for later use;
2) 100 parts of ammonium sulfate powder containing 20.5 percent of nitrogen are injected into a fertilizer mixing tank from a fertilizer feed inlet, 1 part of CP ((2-chloro-6-trichloromethyl-pyridine) is thrown into the fertilizer mixing tank, a stirrer is started to stir, when the ammonium sulfate and the CP are uniformly stirred, the stirring time is 15 minutes, the mixture is lifted to the feed inlet of an extruder through a bucket elevator, and extrusion granulation is carried out, so that the efficient and stable green ammonium nitrogen granular nitrogen fertilizer containing 20 percent of nitrogen with the grain diameter of 2.5-4.8mm is prepared.
3. The utility model provides a special high-efficient green ammonium nitrogen fertilizer of stability of brown soil which characterized in that:
the method takes ammonium chloride as a nitrogen source to prepare the high-efficiency stable green ammonium nitrogen fertilizer, and comprises the following raw materials: taking 100 parts of powdery ammonium chloride as a reference, 1 part of a mixture of DCD (dicyanodiamine) and AM (2-amino-4-chloro-6-methylpyrimidine), wherein the mixture is 1; wherein the ammonium chloride powder contains 26% of nitrogen;
the preparation method comprises the following steps:
1) Preparing a mixed nitrification inhibitor: mixing 1 part of DCD (dicyanodiamine) and 0.5 part of AM (2-amino-4-chloro-6-methylpyrimidine), and stirring uniformly for later use;
2) Adding 100 parts of ammonium chloride powder containing 26% of nitrogen into a fertilizer mixing tank, adding the prepared mixed nitrification inhibitor into the fertilizer mixing tank, mixing with the ammonium chloride powder, and carrying out mechanical or manual stirring to obtain the high-efficiency stable green ammonium nitrogen granular nitrogen fertilizer containing 25% of nitrogen after uniform stirring.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434502A (en) * 2007-11-16 2009-05-20 中国科学院沈阳应用生态研究所 Synergistic slow release nitrogen fertilizer and preparation thereof
CN101607855A (en) * 2009-07-22 2009-12-23 山东光大肥业科技有限公司 A kind of organic-inorganic compound fertilizer special that reduces nitrate content of Chinese cabbage and preparation method thereof
CN102503686A (en) * 2011-10-29 2012-06-20 史丹利化肥股份有限公司 Melt granulation polypeptide stability lost control compound fertilizer and preparing method thereof
CN103553770A (en) * 2013-10-21 2014-02-05 张喜梅 Organic microorganism-containing ecological fertilizer and production method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434502A (en) * 2007-11-16 2009-05-20 中国科学院沈阳应用生态研究所 Synergistic slow release nitrogen fertilizer and preparation thereof
CN101607855A (en) * 2009-07-22 2009-12-23 山东光大肥业科技有限公司 A kind of organic-inorganic compound fertilizer special that reduces nitrate content of Chinese cabbage and preparation method thereof
CN102503686A (en) * 2011-10-29 2012-06-20 史丹利化肥股份有限公司 Melt granulation polypeptide stability lost control compound fertilizer and preparing method thereof
CN103553770A (en) * 2013-10-21 2014-02-05 张喜梅 Organic microorganism-containing ecological fertilizer and production method thereof

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