What are the precautions for the purchase of water-soluble fertilizers? At present, the use of water-soluble fertilizers is getting higher and higher. The market is mixed with water-soluble fertilizers. What are the precautions when purchasing water-soluble fertilizers? This article summarizes the points as a reference for everyone to buy water-soluble fertilizers.
The amount of nutrients in a large amount of elements and trace elements on the package. According to the standard of large-scale water-soluble fertilizers, the single nutrient content of nitrogen, phosphorus and potassium should not be lower than 4%, and the sum of the three should not be less than 50%. If a large amount of elements are seen on the package, the label is less than 4%. The sum of the three elements is less than 50%, indicating that such products are unqualified. The trace element content refers to the sum of the contents of copper, iron, manganese, zinc, boron and molybdenum. The product should contain at least one trace element, and the single trace element with the content of not less than 0.05% should be included in the trace element content.
Labeling of various specific nutrients on the package. The high-quality large-scale water-soluble fertilizer is very clear on the identification of the ingredients (including a large number of elements and trace elements), and they are all single-labeled, the nutrient content is clear, and the people can use it with confidence. The nutrient content of informal manufacturers generally appears with the words “several sum of several elements> percent. If so marked, the product is not regular.
Product formulation and registration of crops. A large amount of water-soluble fertilizer is a formula fertilizer. High-quality water-soluble fertilizer generally has several formulas. From the seedling stage to the harvesting, a suitable formula can be found. If the package clearly states that it is a special fertilizer for a certain crop. One or two formulas are used in the world, and such practices are not formal.
There are no product implementation standards, product generic names and fertilizer registration certificates. Generally speaking, the fully water-soluble fertilizer, in fact, its product name is a large number of elements of water-soluble fertilizer, the general implementation standard is NY1107-2010, if the packaging does not appear this standard, it is not a fully water-soluble fertilizer. Many of the fully water-soluble fertilizer packagings are marked with GB, indicating that such products are unqualified.
In addition, it depends on whether there is a fertilizer registration certificate number. If there is any doubt about the product, you can check the fertilizer registration certificate number on the Internet, qualified large amount of water-soluble fertilizer, fertilizer registration certificate number and manufacturer can find it. If not, the product is unqualified.
There is no anti-counterfeiting mark. The water-soluble fertilizer produced by regular manufacturers has anti-counterfeiting marks on the packaging bags. It is the “identity card†of fertilizers. The anti-counterfeiting marks on each package of fertilizers are different. After scraping, you can input them online or by phone. After the number, you can know the true and false of the fertilizer.
Exterior. Good quality water-soluble fertilizer products have uniform particles and are crystalline. If you see different particle sizes, especially similar to compound fertilizer particles, it is best not to buy them.
Whether the heavy metal content is marked on the package. The heavy metal ion content of a large number of elemental water-soluble fertilizers produced by regular manufacturers is lower than the national standard and is clearly marked. Please use caution if there is no heavy metal content on the fertilizer packaging bag.
Dissolved. The high-quality, fully water-soluble fertilizer dissolves rapidly in water, and the solution is clear and free of residue and sediment. If the fertilizer is not completely dissolved in water, there is residue, indicating that the quality of the fertilizer is not very good.
This article URL: What are the precautions for purchasing water soluble fertilizer?
Dongying Hong Xing Labor Protection Products Co.,Ltd. , https://www.hongxinglabor.com