Recently, when the author visited the countryside, he discovered that because of the difference in the word, many farmers misunderstood compound fertilizers as compound fertilizers. What's more, a small number of chemical fertilizer production and sales companies are ignoring their interests. They use the peasant friends' preference for compound fertilizer, and use compound fertilizers to sell compound fertilizers to make profits, which seriously damages the economic interests of farmers. To this end, the author reminded the farmers that in the process of purchasing and using chemical fertilizers, we must discriminate the content of nutrients, and we should not regard compound fertilizer as compound fertilizer.
The compound fertilizer compound fertilizer has a relatively stable nutrient-distribution ratio and content and is a qualitative fertilizer product, and 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 superphosphate (phosphorus pentoxide 45% ) Nitrophosphate (20% nitrogen, 20% phosphorus pentoxide), monoammonium phosphate (11% nitrogen, 44% phosphorus pentoxide), diammonium phosphate (18% nitrogen, 46% phosphorus pentoxide), sulfuric acid Potassium (potassium oxide 50%), potassium chloride (potassium oxide 60%), potassium dihydrogen phosphate (phosphorus pentoxide 52%, potassium oxide 32%) 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 3 kinds of 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).
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