At present, there are many types of chemical fertilizers produced and marketed in various places, mainly including binary fertilizer, ternary fertilizer, multi-fertilizer and organic-inorganic compound fertilizer. Recently, the author found in the market that some fertilizer distributors or fertilizer manufacturers use compound fertilizer as compound fertilizer sales, and some compound fertilizers (package bags printed with "compound fertilizer") as compound fertilizer sales, so it is not appropriate. . Because these two types of fertilizers have implemented “national standards†since 2010, their production and production processes, quality ratios, and national supervision and management methods are different. The effect and price of the fertilizer are also different. The compound fertilizer is superior to the compound fertilizer and cannot be used as a compound fertilizer.
1. The production process is different. The production process of compound fertilizer is mainly made by chemical reaction method, and the production process requires complicated technology and expensive production equipment to complete. The compound fertilizer production process is relatively simple. It is only necessary to use the nitrogen, phosphorus, potassium and trace elements required for the crop to be mechanically blended as indicated by the nutrient.
2. The ratio and content of nutrients are different. The compound fertilizer has a relatively stable ratio and content, and is a qualitative fertilizer product, mainly including ammonium bicarbonate (nitrogen 17%), urea (nitrogen 46%), ammonium sulfate (nitrogen 21%), ammonium nitrate (nitrogen 35%). , ammonium chloride (23% nitrogen), superphosphate (12% phosphorus pentoxide), calcium magnesium phosphate (14%, 18% phosphorus pentoxide), heavy superphosphate (45% phosphorus pentoxide), Phosphate fertilizer (nitrogen 20%, phosphorus pentoxide 20%), monoammonium phosphate (nitrogen 11%, phosphorus pentoxide 44%), diammonium phosphate (nitrogen 18%, phosphorus pentoxide 46%), potassium sulfate ( Potassium oxide 50%), potassium chloride (potassium oxide 60%), potassium dihydrogen phosphate (phosphorus pentoxide 52%, potassium oxide 32%), agricultural manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate, and the like.
Compound fertilizer mainly contains NPK and different trace elements, including binary compound fertilizer (nitrogen + phosphorus pentoxide + potassium oxide) such as: 20-0-10, 15-12-0 or 0-15- 12 (granular) and so on. The ternary compound fertilizer (nitrogen-phosphorus-potassium) is, for example, 15-15-15, 20-15-5 or 22-5-10 (granular). Multi-element compound fertilizer with at least nitrogen, phosphorus, potassium and more than three kinds of trace element nutrients indicates that the amount of fertilizer is made by blending method, and some are referred to as "large amount of elemental water-soluble fertilizer", such as: 22-10-18, trace elements ≥0.5% (solid).
Organic-inorganic compound fertilizer is a fertilizer containing organic nutrients and inorganic nutrients, such as: (nitrogen + phosphorus pentoxide + potassium oxide) 12-5-8, organic matter ≥ 20% (granular); some is called "organic fertilizer Such as: nitrogen + phosphorus pentoxide + potassium oxide ≥ 6% organic matter ≥ 30% (granule or powder); some are called "amino acid liquid fertilizer" such as: amino acid ≥ 10% trace elements ≥ 2% (liquid); Nitrogen + potassium oxide ≥ 6% (3-0-3) medium element ≥ 0.5%, trace elements ≥ 0.5%, amino acid ≥ 10% (liquid); there is "humic acid water soluble fertilizer" such as: 6-4-10 Humic acid ≥ 4% (solid). All belong to organic-inorganic compound fertilizer.
3. Different ways of supervision and management. As long as the compound fertilizer has complete chemical equipment, it can directly produce and sell fertilizer products without the production license and fertilizer monitoring registration certificate. The blending method for compound fertilizer production does not require expensive chemical equipment, and it is relatively easy to refill and fake. Therefore, the relevant state departments have increased supervision and management of fertilizer enterprises. First, the national quality inspection department implements the "industrial product production license" system for the compound fertilizer production enterprises, and the enterprises that do not have the conditions can not process and produce the compound fertilizer. Second, the Ministry of Agriculture's "Regulations on the Management of Fertilizer Registration" implements a monitoring and registration management system for compound fertilizer products. Products that have not been monitored and registered or products that are not marked with a registration certificate number in the fertilizer packaging bag cannot be sold by the manufacturer or enter the market. . Some fertilizer producers use compound fertilizers as compound fertilizers, deceiving the masses, and reminding farmers that when buying compound fertilizers, they must look for the brands and trademarks marked in the packaging bags. The compound fertilizers must look at the production licenses and fertilizers marked in the packaging bags. Register the certificate number, and ask for the purchase invoice to prevent being deceived and suffer losses.
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