Compound fertilizer is better than compound fertilizer?
Compound fertilizer refers to fertilizer made by chemical method and/or blending method, in which at least two of the three nutrients of nitrogen, phosphorus and potassium are marked. There are extrusion compound fertilizer, mixed compound fertilizer (BB fertilizer), granular compound fertilizer and tower compound fertilizer. Compound fertilizer is a kind of compound fertilizer made by chemical method with at least two nutrients of nitrogen, phosphorus and potassium.
In the pellet compound fertilizer, the amino acid pellet method is this kind, and the process is similar. Most of the raw materials are physically mixed, but amino acids are added as granulation AIDS. From May 1 2009, this process was included in the category of compound fertilizer, and the product name can be marked with compound fertilizer. However, the nutrient content of chemical reaction is less than 3%, which is far from the definition of compound fertilizer. Therefore, strictly speaking, the compound fertilizer produced by amino acid method cannot be labeled as compound fertilizer, but the compound fertilizer produced by this process has been legalized in the licensing examination.
High-tower compound fertilizer is a new type of compound fertilizer production technology which is gradually popular in recent years, with large investment and high threshold. At present, there are more than 100 sets of high-tower compound fertilizer plants in China, and the production capacity accounts for 30% of the national compound fertilizer. High-tower compound fertilizer is deeply loved by farmers because of its stable and uniform nutrients, round particles with pinholes, high strength and inability to imitate.
According to the definition of compound fertilizer, the only real compound fertilizers at present are monoammonium phosphate, diammonium phosphate, potassium dihydrogen phosphate, potassium nitrate and nitrophosphate. Among them, potassium dihydrogen phosphate and potassium nitrate are white transparent crystals, which are often used as foliar fertilizer or drip irrigation fertilizer because there is no residue after dissolution.
Compound fertilizer is the upper concept of compound fertilizer, and compound fertilizer is a kind of compound fertilizer. Merchants are willing to label compound fertilizer subjectively, not because compound fertilizer is superior to compound fertilizer in quality, but because of long-term misunderstanding. Under the same nutrient content, the same chlorine or sulfur content and the same medium and trace elements, the use effect is the same.
There is no essential difference between amino acid compound fertilizer and tower compound fertilizer. High-tower compound fertilizer is more secure to a certain extent, because the process determines that its nutrients are stable and uniform, easy to identify, and not easy to fake. In addition, the investment is large and the threshold is high, which is difficult for small enterprises to reach, and there are relatively few inferior fertilizers in the market. Amino acid compound fertilizer is converted from water or water steaming, which has less investment and low threshold. Although the amino acid method has been included in the application unit of compound fertilizer license since May 1 2009, many enterprises are scrambling to reform it. However, because ammonia-acid is a toxic and dangerous substance, it is difficult to enter the site if it is close to a big city.
To sum up, compound fertilizer is not superior to compound fertilizer, but why are there people vying to go to Hefei? The reason is that farmers lack scientific understanding of fertilizers and have been misled for a long time, so that many regular manufacturers have to follow suit.
At present, all large-scale compound fertilizer plants have high-tower compound fertilizers, but because the market misleads that compound fertilizers are superior to compound fertilizers, it is necessary to increase the ammonia pellet process equipment and obtain the compound fertilizer production license.
Certificate, so that there is really no need to hitchhike to label compound fertilizer, which is not conducive to optimizing quality. On the contrary, it increases the pressure on the environment and safety, increases the burden on enterprises, and increases the difficulty of government supervision. □ Luo Donggui, Technical Consultant of Guangdong Dagenghu Agriculture Co., Ltd.
The real compound fertilizer is chemically synthesized, and the elements are connected by chemical bonds. At present, only diammonium, potassium chloride and monoammonium are compound fertilizers on the market. Compound fertilizer is synthesized by physical methods of three elements or two elements. Now ternary compound fertilizer is generally compound fertilizer.
There are two production processes of compound fertilizer: one is called physical mixing compound fertilizer; The other is a mineral containing nitrogen, phosphorus and potassium, which is called compound fertilizer after chemical reaction. Which is better?
Many farmers believe that compound fertilizer is a combination of various nutrients, and the use effect is better. In fact, this is a wrong understanding. Because compound fertilizer is a mixture of various basic fertilizers, but it contains a lot of nutrients. As long as the nutrient content and composition of the two fertilizers are the same, it should be said that the effect is the same.
Because there is not much difference between compound fertilizer and compound fertilizer in fertilizer efficiency, in 2002, the relevant departments of the state issued a new fertilizer production standard, which classified compound fertilizer and compound fertilizer into one category. Comparatively speaking, the production cost of compound fertilizer is low, as long as all kinds of base fertilizers are prepared, mixed together and stirred evenly. The production of compound fertilizer needs to provide certain conditions for raw materials to carry out chemical reaction and then spray granulation. The required cost is much higher than that of compound fertilizer. The compound fertilizer with the same nutrient content is higher than that on the market 100~200 yuan/t. So buying compound fertilizer or compound fertilizer depends on whether their nutrient content is what they need and whether the price is appropriate.
Expert tip: As long as the nutrients are the same, there is little difference between compound fertilizer and compound fertilizer. Buy compound fertilizer mainly to see if there is caking. The caking of most fertilizers has no effect on the use effect, but it has an effect on the use process. Buying compound fertilizer depends on whether the particle size is uniform. If it is not uniform, the separation of large and small particles will occur during the whole transportation and even during use.
There are two production processes of compound fertilizer: one is called physical mixing compound fertilizer; The other is a mineral containing nitrogen, phosphorus and potassium, which is called compound fertilizer after chemical reaction. Which is better?
Many farmers believe that compound fertilizer is a combination of various nutrients, and the use effect is better. In fact, this is a wrong understanding. Because compound fertilizer is a mixture of various basic fertilizers, but it contains a lot of nutrients. As long as the nutrient content and composition of the two fertilizers are the same, it should be said that the effect is the same.
Because there is not much difference between compound fertilizer and compound fertilizer in fertilizer efficiency, in 2002, the relevant departments of the state issued a new fertilizer production standard, which classified compound fertilizer and compound fertilizer into one category. Comparatively speaking, the production cost of compound fertilizer is low, as long as all kinds of base fertilizers are prepared, mixed together and stirred evenly. The production of compound fertilizer needs to provide certain conditions for the chemical reaction of raw materials.
Then spray granulation,
The required cost is much higher than that of compound fertilizer,
In the market, compound fertilizer with the same nutrient content is higher than compound fertilizer.
100~200
Yuan dynasty (1206- 1368)
/t
. So buying compound fertilizer or compound fertilizer depends on whether their nutrient content is what they need.
Yes, is the price right?
Expert tip:
As long as they contain the same nutrients,
There is little difference between compound fertilizer and compound fertilizer.
Buying compound fertilizer mainly depends on whether it is stored.
In the caking phenomenon,
The caking of most fertilizers does not affect the use effect,
But it has an impact on the use process.
Need to buy compound fertilizer
See if the particle size is uniform,
If not uniform particles,
In the whole transportation process, even in the use process, there will be separation of large and small particles.
Phenomenon.
Compulsory national standard for compound fertilizer
Issued by the General Administration of Quality Supervision, Inspection and Quarantine.
GB 18382
—
200 1
Fertilizer label,
Content and requirements "
GB 15063
—
200 1
complex fertilizer
(
complex fertilizer
)
"Two mandatory national standards, this year.
1
moon
1
Rihe
seven
moon
1
Leave day after day
It plays a role in production and circulation. So, how do farmers choose satisfactory fertilizers?
Here, the author talks about
Talk about some problems that should be paid attention to.
I. Name of fertilizer
The names of fertilizers that have been stipulated in national standards and industry standards should be marked, such as "compound fertilizer"
、
"complex
Hefei material "and so on.
The name of special-purpose fertilizer should be small under the product name.
1
No font label, such as "compound fertilizer"
Potassium sulfate type "
. If farmers' friends see "efficient ×××"
、
"XX Fat King"
、
The words "all elements ×× fertilizer" etc.
Explain that the product has false and exaggerated propaganda.
Second, compound fertilizer
(
complex fertilizer
)
Nutrition label
Total nutrient content: 100% of total nutrients of nitrogen, phosphorus and potassium shall be indicated.
Content, other elements or compounds shall not be included in the total nutrients, such as nitrogen, phosphorus and potassium content are
15
—
15
—
15
nitrogen (N)
Phosphorus-potassium mixture
(
close
)
Fertilizer, its total nutrients should be marked as total nutrients ≥
45
Single nutrient component:
Total nitrogen, available phosphorus pentoxide,
oxidate
Percentage content of potassium. Farmers' friends should pay attention to the fact that the single nutrient content of the product cannot be lower than.
4.0%
Such as complexes of nitrogen, phosphorus and potassium.
complex fertilizer
15
—
15
—
15;
Binary fertilizer should be marked with ""where there is no single nutrient.
"
, such as compound fertilizer
15
—
—
10
, form
It shows that the fertilizer contains no phosphorus or phosphorus is lower than phosphorus.
4.0%
The words "△" shall not be marked on the package.
If medium elements and trace elements are added, they shall not be indicated in the packaging container and quality certificate.
Third,
Label of chloride ion content
Mixing time
(
close
)
The content of chloride ion in fertilizer is greater than
3.0%
When,
It should be marked on the package.
bright
"chlorine"
In order to avoid chlorine-free crops such as yellow tobacco,
Damage caused by fruit trees, etc
There is no mark on the packaging container.
"chlorine"
Yes,
Its chloride ion content shall not exceed
3.0%
Fourth, the certificate of approval
(
quality certificate
)
, production date or batch number
Each bag of fertilizer should be accompanied by a product certificate or quality certificate.
Books. Product certificate or quality certificate and product packaging should indicate the date of production or batch number.
Verb (abbreviation of verb) product standard
Compound fertilizer or compound fertilizer is a national mandatory standard.
GB 15063
—
200 1
complex fertilizer
material
(
complex fertilizer
)
》
. The product standard number and year number should be marked on the product package.
In technical terms, compound fertilizer (
complicated
fertilizer
) contains compound fertilizer (
multiple
fertilizer
)
Compound fertilizer should be changed from chemical fertilizer to
Reaction products, such as
Delivery at destination
, map
,
Nitrophosphate has uniform nutrients, and compound fertilizer generally refers to mixed fertilizer and mixed fertilizer, which has relative nutrient deviation, because
The market of this compound fertilizer is better than that of compound fertilizer, and all manufacturers hope to bid for compound fertilizer.
According to the news of the National Standards Committee, the compound fertilizer that does not use ammonia as raw material in the future can only be called compound fertilizer. For example, many compound fertilizers are just melted now.
It is converted into slurry and re-granulated, but it will be judged as compound fertilizer in the future because no ammonia is added. If ammonia reacts, it can be classified as compound fertilizer.