Various chemical fertilizers have standardized markings, special external forms, and different physical and chemical properties. According to the fertilizer packaging label, the appearance of the observation, the change of water solubility, alkali addition and fire burning can preliminarily determine the type and true and false of the fertilizer. However, to know whether the nutrient content meets the product standards, it must be sampled. In order to safeguard the interests of farmers and enhance the awareness of self-protection, the simple identification method of fertilizer is introduced as follows.
First, the intuitive method
Mainly depends on the packaging, color, smell and so on of fertilizer products.
1. The packaging is in accordance with the standards of GB18382-2001: the product's packaging label has the name and trademark of the fertilizer indicated in Chinese; the fertilizer specification, grade and net content; nutrient content; other additive content; production license number and fertilizer registration certificate number; Execution criteria; producer's name and site, telephone number; warning instructions. At the same time, the product instruction manual should be attached to the product bag. The product used within the time limit should also indicate the date of manufacture and the expiration date.
Compound fertilizer (composite fertilizer) National standard GB15063-2001 "complex fertilizer (composite fertilizer)" provisions correctly labeled: trademark; compound fertilizer; total nutrient content N + P2O5 + K2O three elements nutrient content sum; nitrogen, Single nutrient content of phosphorus, potassium (N, P2O5, K2O); product implementation standards; production license number; fertilizer registration certificate number; whether chlorine is contained (chlorine-free compound fertilizer should be marked: potassium sulfate type fertilizer) Net content; factory name, site, telephone; at the same time, the minimum nutrient content of compound fertilizer (composite fertilizer) is 25%. At present, there are misleading signs on the compound fertilizer packaging bag: 1 is any one of medium amount, trace element calcium (CaO), silicon (SiO2), magnesium (MgO), sulfur (S) or Several elements replace any of the three elements of nitrogen (N), phosphorus (P2O5), and potassium (K2O). If the compound fertilizer that should indicate nitrogen, phosphorus, potassium (N, P2O5, K2O) nutrient content is changed to nitrogen, phosphorus, sulfur [(N, P2O5, S) or (Si, Mg, Ca)], it is missing. Potassium content, deceiving and misleading farmers. 2 The nitrogen, phosphorus and potassium three-factor fertilizers and the medium and trace elements calcium, magnesium, silicon, sulfur and trace elements zinc, boron, iron, manganese, molybdenum, copper and other nutrients are added together as the total nutrient content. 3 The organic matter content as an effective nutrient content combined with nitrogen, phosphorus and potassium nutrients combined to mislead farmers.
Organic-inorganic compound fertilizer According to the national standard GB18877-2002: organic-inorganic compound fertilizer has an organic matter content of ≥20%, and total nutrient content of nitrogen, phosphorus and potassium (N, P2O5, K2O) ≥15%. Organic-inorganic compound fertilizers below the above two indicators are unqualified fertilizer products.
Organic Fertilizer The Ministry of Agriculture Industry Standard NY525-2002 stipulates that the organic matter content of organic fertilizers is ≥30%; the total nutrient content is nitrogen, phosphorus and potassium (N, P2O5, K2O) ≥ 4%. All organic fertilizers below the above two indicators are unqualified fertilizer products.
Foliar fertilizer foliar fertilizer should meet the following technical indicators: 1 large amount of elements (N + P2O5 + K2O) soluble fertilizer ≥ 50%; 2 trace elements (Fe + Zn + B + Mo + Mn + Cu) foliar fertilizer ≥ 10%; 3 amino acid foliar fertilizer amino acid content ≥ 10%; 4 humic acid soluble fertilizer total humic acid content ≥ 3% or more.
Some of them contain only 3% of calcium, magnesium and silicon fertilizers containing P2O5 as calcium, magnesium and silicon fertilizers. Farmers' friends can easily mistake this fertilizer for calcium, magnesium and phosphorus fertilizers. Any product lacking product implementation standards, fertilizer registration certificate number, production license number (referring to compound fertilizer, superphosphate, calcium magnesium phosphate, calcium magnesium phosphate) shall be regarded as unlicensed products. Market sales.
All fertilizer products on the packaging bag that do not indicate the name of the fertilizer factory, the company address and the telephone number shall be regarded as fake and inferior fertilizer products.
2. Color All nitrogen fertilizers are almost white, some slightly brown or light blue. Potassium fertilizer has white (such as potassium sulfate, salt lake potash) and red (such as Canadian potassium chloride, Russian potassium chloride), potassium dihydrogen phosphate is white, calcium magnesium phosphate fertilizer, superphosphate is gray.
3. Odor The ammonium bicarbonate has a strong ammonia smell, the ammonium sulfate is slightly sour, and the superphosphate has a sour taste.
First, the intuitive method
Mainly depends on the packaging, color, smell and so on of fertilizer products.
1. The packaging is in accordance with the standards of GB18382-2001: the product's packaging label has the name and trademark of the fertilizer indicated in Chinese; the fertilizer specification, grade and net content; nutrient content; other additive content; production license number and fertilizer registration certificate number; Execution criteria; producer's name and site, telephone number; warning instructions. At the same time, the product instruction manual should be attached to the product bag. The product used within the time limit should also indicate the date of manufacture and the expiration date.
Compound fertilizer (composite fertilizer) National standard GB15063-2001 "complex fertilizer (composite fertilizer)" provisions correctly labeled: trademark; compound fertilizer; total nutrient content N + P2O5 + K2O three elements nutrient content sum; nitrogen, Single nutrient content of phosphorus, potassium (N, P2O5, K2O); product implementation standards; production license number; fertilizer registration certificate number; whether chlorine is contained (chlorine-free compound fertilizer should be marked: potassium sulfate type fertilizer) Net content; factory name, site, telephone; at the same time, the minimum nutrient content of compound fertilizer (composite fertilizer) is 25%. At present, there are misleading signs on the compound fertilizer packaging bag: 1 is any one of medium amount, trace element calcium (CaO), silicon (SiO2), magnesium (MgO), sulfur (S) or Several elements replace any of the three elements of nitrogen (N), phosphorus (P2O5), and potassium (K2O). If the compound fertilizer that should indicate nitrogen, phosphorus, potassium (N, P2O5, K2O) nutrient content is changed to nitrogen, phosphorus, sulfur [(N, P2O5, S) or (Si, Mg, Ca)], it is missing. Potassium content, deceiving and misleading farmers. 2 The nitrogen, phosphorus and potassium three-factor fertilizers and the medium and trace elements calcium, magnesium, silicon, sulfur and trace elements zinc, boron, iron, manganese, molybdenum, copper and other nutrients are added together as the total nutrient content. 3 The organic matter content as an effective nutrient content combined with nitrogen, phosphorus and potassium nutrients combined to mislead farmers.
Organic-inorganic compound fertilizer According to the national standard GB18877-2002: organic-inorganic compound fertilizer has an organic matter content of ≥20%, and total nutrient content of nitrogen, phosphorus and potassium (N, P2O5, K2O) ≥15%. Organic-inorganic compound fertilizers below the above two indicators are unqualified fertilizer products.
Organic Fertilizer The Ministry of Agriculture Industry Standard NY525-2002 stipulates that the organic matter content of organic fertilizers is ≥30%; the total nutrient content is nitrogen, phosphorus and potassium (N, P2O5, K2O) ≥ 4%. All organic fertilizers below the above two indicators are unqualified fertilizer products.
Foliar fertilizer foliar fertilizer should meet the following technical indicators: 1 large amount of elements (N + P2O5 + K2O) soluble fertilizer ≥ 50%; 2 trace elements (Fe + Zn + B + Mo + Mn + Cu) foliar fertilizer ≥ 10%; 3 amino acid foliar fertilizer amino acid content ≥ 10%; 4 humic acid soluble fertilizer total humic acid content ≥ 3% or more.
Some of them contain only 3% of calcium, magnesium and silicon fertilizers containing P2O5 as calcium, magnesium and silicon fertilizers. Farmers' friends can easily mistake this fertilizer for calcium, magnesium and phosphorus fertilizers. Any product lacking product implementation standards, fertilizer registration certificate number, production license number (referring to compound fertilizer, superphosphate, calcium magnesium phosphate, calcium magnesium phosphate) shall be regarded as unlicensed products. Market sales.
All fertilizer products on the packaging bag that do not indicate the name of the fertilizer factory, the company address and the telephone number shall be regarded as fake and inferior fertilizer products.
2. Color All nitrogen fertilizers are almost white, some slightly brown or light blue. Potassium fertilizer has white (such as potassium sulfate, salt lake potash) and red (such as Canadian potassium chloride, Russian potassium chloride), potassium dihydrogen phosphate is white, calcium magnesium phosphate fertilizer, superphosphate is gray.
3. Odor The ammonium bicarbonate has a strong ammonia smell, the ammonium sulfate is slightly sour, and the superphosphate has a sour taste.
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