Look at the qualified chemical fertilizer produced by the regular manufacturer. The package name is usually 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 the writing is illegible Sometimes, you don't need Chinese characters to use pinyin to pretend to be imported fertilizer.
Look at the price saying: "cheap is not good." The price of fake degraded fertilizer is generally lower than the price of similar high-quality fertilizer on the market.
Look at the varieties of fake deterioration fertilizers generally with compound fertilizers (such as diammonium phosphate, etc.), urea, superphosphate, liquid fertilizer, foliar fertilizer, etc., in the purchase of such fertilizers, pay special attention; ammonium bicarbonate and other fertilizers in Fake goods are rare on the market.
Chemical fertilizers with different appearances often have different appearance traits, such as ammonium bicarbonate as white, with strong ammonia odor; urea, ammonium sulfate, ammonium nitrate, ammonium chloride are white granular crystals; super-calcium carbonate is grayish white powder It has a sour taste; the three-material superphosphate is blue-gray, the particles are large and uniform, and have no odor; the calcium-magnesium phosphate is an off-white powder with no odor; potassium sulfate is a white powdery crystal with no odor; Or iron-gray particles, the particle size is not uniform, it is volatile in a humid environment, and has an 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.
Farmers Daily
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