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1. Look at the packaging. Where qualified chemical fertilizers produced by regular manufacturers are generally marked with Chinese characters, nutrients and their contents, net weight, place of origin, etc.; fake deterioration of fertilizer packaging is rough, damage rate is high; signs are incomplete or illegible, sometimes Do not use Chinese characters to pinyin to impersonate imported fertilizer.
2, look at the price. As the saying goes: "Cheap and no good goods." The price of fake degraded fertilizer is generally lower than the price of similar high-quality fertilizer on the market.
3. Look at the variety. False deterioration fertilizers are generally based on compound fertilizers (such as diammonium phosphate), urea, superphosphate, liquid fertilizers, and foliar fertilizers. When purchasing such fertilizers, special attention should be paid to them; ammonium bicarbonate and other fertilizers are on the market. Few fakes appear.
4, look at the appearance. Different chemical fertilizers often have different appearance traits, such as ammonium bicarbonate is white, with strong ammonia odor; urea, ammonium sulfate, ammonium nitrate, ammonium chloride are white granular crystals; super-calcium carbonate is gray-white powder, there are Sour thorn; three-material superphosphate is blue-gray, the particles are large and uniform, no odor; calcium magnesium phosphate is gray-white powder, no odor; potassium sulfate is white powder crystal, no odor; diammonium phosphate is yellow ash or iron Gray particles, uneven particle size, volatile in a humid environment, with ammonia smell. In addition, ammonium nitrate such as ammonium sulfate, ammonium nitrate or ammonium chloride, and compound fertilizer containing ammonium nitrogen such as diammonium phosphate are placed in the palm of your hand with a small amount of grass ash (or alkali surface, lime surface). Ammonia smell. If the chemical fertilizer encountered is clearly inconsistent with its characteristics, it can be judged to be a fake deterioration fertilizer.
"Four strokes" of spring ploughing and preparing for fertilizer
At present, it is the peak season for sales and use of chemical fertilizers in spring ploughing. In order to prevent the purchase of counterfeit and shoddy products, according to the characteristics of fake degraded fertilizer on the market, several simple identification methods are introduced:
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