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A look at the product water solubility. A truly qualified liquid water soluble fertilizer generally does not exhibit significant delamination and precipitation; while for solid water soluble fertilizer, a small amount of sample can be dissolved in water, and the residue is generally a counterfeit product.
Second, look at the proportion. All water-soluble fertilizer products that meet the national registration index are added with a large number of elements, medium or trace elements or organic matter, so that the density of water-soluble fertilizers is inevitably greater than that of water. The true density of water-soluble fertilizer products is 1.3 kg/ Rise. In other words, 100 ml of liquid water soluble fertilizer, the actual weight should be around 130 grams.
Third, look at the registration number. The Ministry of Agriculture expressly stipulates that all fertilizer products must implement one factory and one certificate, and it is not allowed to borrow certificates. Nowadays, many manufacturers without production strength privately produce without the factory building, without technology, without equipment, and without the fertilizer registration certificate, and compile the fertilizer registration certificate to confuse the audience. Therefore, the purchaser can visit the website of the National Fertilizer Quality Supervision and Inspection Center and enter the registration number to check the authenticity. If the product registration number is not found on this official website, the purchase must be cautious.
Fourth, look at the packing instructions. Many manufacturers exaggerate the use of products for profit, and make false publicity on bags or bottle labels. Foliar fertilizers are unlikely to have the quick-acting effect of chemical pesticides, so it is impossible to make a splash. Foliar fertilizers that are truly up to standard or exceed national standards are long-lasting. So when you see the packaging instructions blowing in the air, it may be a counterfeit product, you should buy it carefully.
In addition, there are also people in the industry who proposed the price comparison method. They said that although the current agricultural product price system is very confusing, the high-priced products are not necessarily good goods, but due to the production cost, the price is very low. The possibility is very large. For example, if the retail price of more than 20 grams on the market is about 1 yuan, it is usually ammonia or hormone plus urea plus hormone. Such products may make the leaves of melon and fruit crops turn green quickly, but the actual It may have a negative effect on increasing production.
"Four look" to distinguish high-quality water soluble fertilizer
In a chaotic market, how do farmers identify the true and false, and buy high-quality water-soluble fertilizer? The general can be identified from the following aspects:
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