Identification method and forgery method of water-soluble compound fertilizer;
1. Look at the label: the correct label of compound fertilizer should include the trademark, trademark name, content and composition of nitrogen, phosphorus and potassium (sulfur and chlorine), nitrate nitrogen, solubility, manufacturer, telephone number, contract number of imported products (available online) and registration number of domestic products (available online).
2. Check and make a phone call: the lower corner of the domestic or imported compound fertilizer packaging bag is marked with the free phone number of the manufacturer or import company. Please try calling the phone number to check it. If the phone is disconnected or no one answers for a long time, and some lines are always busy, it means that this fertilizer is definitely fake, and you can't buy it without a phone number. I bought a carbon-filled compound fertilizer. I went to official website, watched it once, and then dialed 400 to confirm it again.
3. Look at the packaging: the packaging of imported compound fertilizers is generally standardized. Due to long-distance transshipment at ports, trains and buses, double-sided seams and packaging bags are dirty and black. The woven bag of fake fertilizer is relatively clean, and there are many single-sided seams in the packaging bag.
4. Key comparison:
(1) Element identification of compound fertilizer: The correct element identification should be nitrogen (N)- phosphorus (P)- potassium (K), and the actual content should be marked below. Such as "nitrogen-calcium-sulfur is nitrogen, calcium and sulfur" and "nitrogen-calcium-potassium is"
Labels of nitrogen, calcium and potassium, N-P-S stands for nitrogen, phosphorus and sulfur, N-Ca-Mg stands for nitrogen, calcium and magnesium, and N-NH3-Ca stands for nitrogen, ammonia and calcium. These are all standards.
Domestic and imported compound fertilizers are definitely not marked with "N-Ca-K, N-P-Fe, N-Mg-Zn".
(2) According to the origin label, the imported compound fertilizer shall be correctly marked with the producing country and China importer. If the marked country of origin of raw materials is Russia (or Canada, etc.), it is a counterfeit product that misleads consumers. The place of origin of raw materials is written in a foreign name, which makes consumers think that it is an imported compound fertilizer, but in fact only the raw material potassium is imported from Russia or Canada.
5. Look at the dissolution speed and color: if the domestic or imported compound fertilizer is marked with nitrate nitrogen and fully water-soluble compound fertilizer, its dissolution speed is fast, otherwise it is slow, and it is not marked with water-soluble compound fertilizer, and its dissolution speed is fast. This product is average.
6. Compare products. Because counterfeiters will adopt the method of shoddy, one is to pack domestic compound fertilizer into imported compound fertilizer packaging bags for packaging and sales; Second, the self-produced compound fertilizer is a fake regular manufacturer or enters.
Products made in China. The best way to identify the above behavior is to compare several products produced or imported from the same factory and country to see whether the compound fertilizer particles are uniform, the color is consistent, the solubility is the same, and the fertilizer packaging labels are different.
7. Purchase of compound fertilizer requires an invoice. Keep the packaging bag after use and leave a small amount of samples. If there is any problem with crop growth, send the samples to relevant departments for complaint and inspection in time.