Farmer friends often buy spring-fertilized fertilizer in the winter. In order to prevent the purchase of fake fertilizer and inferior fertilizer, you should learn some methods to identify fertilizer.
First, the package is checked. The outer packaging is a woven bag, the inner packaging is a plastic bag, the packaging bag is machine-stitched, and the seams should be neat and uniform. The national regulations stipulate that the trademark, fertilizer name, manufacturer, fertilizer composition (indicating nitrogen, phosphorus, potassium content and trace element content), product net weight and standard code should be marked on the packaging bag. Each batch of products will be accompanied by a quality certificate. . Superphosphate has bulk products, but it also comes with a factory certificate.
Second, the appearance inspection.
1. Seeing. Fertilizer granules have good luster, bright colors are excellent, and dullness is inferior. Handcuffs. Put the palm of your hand into the fertilizer, and twist it twice. If you don't break it, it's better, and the harder the better.
3. Water soluble. Take a small amount of nitrogen fertilizer and potassium fertilizer and stir it in water for 5 minutes. It can be completely dissolved to be excellent, and it cannot be completely dissolved. Diammonium phosphate can be dissolved in water, but the dissolution time is longer.
4. Fire. High-quality nitrogen fertilizer and phosphate fertilizer can be fired. The longer the melting time, the less the remaining impurities are. The shorter the melting time and the worse the residual impurities. Urea can be burned with fire, and white smoke is emitted when the temperature is high. Diammonium can be burned by fire, and the longer the melting, the better. The compound fertilizer can be burned by fire, and the longer the melting time, the better. Phosphate fertilizer does not burn, so the quality is relatively poor. The compound fertilizer is not burnt, and the inferior fertilizer is it.
5. Potash fertilizer. There are white, red, pink, red potassium fertilizer is generally imported potassium fertilizer, the best quality, potassium fertilizer tastes with tongue, spicy taste is excellent, spicy taste is small. The compound fertilizer tastes spicy with the tongue, indicating that it contains potassium.
6. Bb fat. It is made by blending large granular urea, diammonium phosphate and potassium parent fertilizer. The urea and potassium parent fertilizer can be opened by water. The diammonium phosphate is dissolved in water for a long time, but it can be opened. In addition, the diammonium phosphate can be burned by fire. .
Third, when purchasing fertilizer, you must leave a receipt and relevant ticket, so that you can make a voucher claim when there is a problem.
First, the package is checked. The outer packaging is a woven bag, the inner packaging is a plastic bag, the packaging bag is machine-stitched, and the seams should be neat and uniform. The national regulations stipulate that the trademark, fertilizer name, manufacturer, fertilizer composition (indicating nitrogen, phosphorus, potassium content and trace element content), product net weight and standard code should be marked on the packaging bag. Each batch of products will be accompanied by a quality certificate. . Superphosphate has bulk products, but it also comes with a factory certificate.
Second, the appearance inspection.
1. Seeing. Fertilizer granules have good luster, bright colors are excellent, and dullness is inferior. Handcuffs. Put the palm of your hand into the fertilizer, and twist it twice. If you don't break it, it's better, and the harder the better.
3. Water soluble. Take a small amount of nitrogen fertilizer and potassium fertilizer and stir it in water for 5 minutes. It can be completely dissolved to be excellent, and it cannot be completely dissolved. Diammonium phosphate can be dissolved in water, but the dissolution time is longer.
4. Fire. High-quality nitrogen fertilizer and phosphate fertilizer can be fired. The longer the melting time, the less the remaining impurities are. The shorter the melting time and the worse the residual impurities. Urea can be burned with fire, and white smoke is emitted when the temperature is high. Diammonium can be burned by fire, and the longer the melting, the better. The compound fertilizer can be burned by fire, and the longer the melting time, the better. Phosphate fertilizer does not burn, so the quality is relatively poor. The compound fertilizer is not burnt, and the inferior fertilizer is it.
5. Potash fertilizer. There are white, red, pink, red potassium fertilizer is generally imported potassium fertilizer, the best quality, potassium fertilizer tastes with tongue, spicy taste is excellent, spicy taste is small. The compound fertilizer tastes spicy with the tongue, indicating that it contains potassium.
6. Bb fat. It is made by blending large granular urea, diammonium phosphate and potassium parent fertilizer. The urea and potassium parent fertilizer can be opened by water. The diammonium phosphate is dissolved in water for a long time, but it can be opened. In addition, the diammonium phosphate can be burned by fire. .
Third, when purchasing fertilizer, you must leave a receipt and relevant ticket, so that you can make a voucher claim when there is a problem.
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