At present, there are many kinds of chemical fertilizers produced and marketed in various regions, including binary fertilizers, ternary fertilizers, multiple fertilizers, and organic-inorganic compound fertilizers. Recently, the author found on the market that some fertilizer dealers or fertilizer production companies sold compound fertilizers as compound fertilizers, and some sold mixed fertilizers (bags printed with “compound fertilizersâ€) as compound fertilizers. This was inappropriate. .
Because these two types of fertilizers have been implemented as "national standards" since 2010, their production and production processes, the ratio of their quality to their distribution, and their national supervision and management methods are different. The effects and prices of fertilizers are also different. Compound fertilizers are superior to compound fertilizers and cannot be used as compound fertilizers.
Production process is different
The production process of compound fertilizer is mainly based on the use of chemical reaction methods to produce fertilizers. The production process requires complicated technology and valuable production equipment to complete. Compound fertilizer production process is relatively simple. It is only necessary to mix the nitrogen, phosphorus, potassium, and trace elements required by the crop with the amount of nutrient content by mechanical blending.
The ratio and content of nutrients are different
The compound fertilizer has a relatively stable nutrient-distribution ratio and content and is a qualitative fertilizer product. It mainly includes ammonium bicarbonate (nitrogen 17%), urea (nitrogen 46%), ammonium sulfate (nitrogen 21%), and ammonium nitrate (nitrogen 35%). , ammonium chloride (nitrogen 23%), superphosphate (phosphorus pentoxide 12%), calcium magnesium phosphate fertilizer (phosphorous pentoxide 14%, 18%), heavy calcium phosphate (phosphorus pentoxide 45%), Nitrophosphate fertilizer (20% nitrogen, 20% phosphorus pentoxide), monoammonium phosphate (11% nitrogen, 44% phosphorus pentoxide), diammonium phosphate (18% nitrogen, 46% phosphorus pentoxide), potassium sulfate ( Potassium oxide 50%), potassium chloride (potassium oxide 60%), potassium dihydrogen phosphate (phosphorous pentoxide 52%, potassium oxide 32%), agricultural manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate, and the like.
Compound fertilizers mainly contain nitrogen, phosphorus, potassium and trace elements in different amounts, including binary compound fertilizers (nitrogen + phosphorus pentoxide + potassium oxide) such as: 20-0-10, 15-12-0 or 0- 15-12 (granular) and so on. Ternary compound fertilizer (nitrogen-phosphorus-potassium) such as: 15-15-15, 20-15-5, or 22-5-10 (granular). Multi-element compound fertilizer is at least nitrogen, phosphorus, potassium and more than three trace elements, fertilizers made by blending methods, some referred to as "a large number of elements in water-soluble fertilizers", such as: 22-10-18, trace elements ≥ 0.5% (solid).
The organic-inorganic compound fertilizer is a fertilizer containing organic nutrients and inorganic nutrients, such as (nitrogen+phosphorus pentaoxide+potassium oxide)12-5-8, organic matter≥20% (grainy), and some called organic fertilizers. Such as: nitrogen? phosphorus pentoxide? potassium oxide ≥ 6% organic matter ≥ 30% (grain or powder); some known as "amino acid liquid fertilizers" such as: amino acids ≥ 10% trace elements ≥ 2% (liquid); Nitrogen? Potassium oxide ≥ 6% (3-0-3) Medium amount element ≥ 0.5%, Trace element ≥ 0.5%, Amino acid ≥ 10% (liquid); There is "humic acid water-soluble fertilizer" such as: 6-4-10 Humic acid ≥4% (solids) are organic-inorganic compound fertilizers.
Different supervision and management methods
As long as compound fertilizers have complete chemical equipment and do not require production licenses and fertilizer monitoring registration certificates, they can directly produce and sell fertilizer products. The blending method for the production of compound fertilizers does not require expensive chemical equipment. It is relatively easy to use shoddy products and counterfeit products. Therefore, the relevant state departments have increased the supervision and management of chemical fertilizer companies. The first is that the national quality inspection department implements the "industrial product production license" system for the compound fertilizer production enterprises, and the non-qualified enterprises cannot process and produce the compound fertilizer. Second, the "Regulations for the Administration of Fertilizer Registration" of the Ministry of Agriculture implements a monitoring and registration management system for compound fertilizer products. All products that have not been monitored or registered, or products that have not been marked with the registration certificate number on the outer packaging bag of fertilizer, cannot be sold by the manufacturer or marketed. . Some fertilizer manufacturers use compound fertilizers as compound fertilizers to trick the masses and remind farmers to look for brands and trademarks that are marked on the bags when they purchase compound fertilizers. Compound fertilizers should look for production licenses and fertilizers marked on the bags. Registration number, at the same time asking for purchase invoices, to prevent fraud, suffered losses.
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