How to identify the quality of a large number of elemental fertilizers

At present, the quality level of fertilizer products in circulation on the market is uneven, and the small partners of large growers must practice a pair of fire eyes when buying. Here are some tips on how to tell the good from the bad.

Look at the packaging of a large number of elements and nutrients the content of nutrients

According to the large number of element fertilizer standards, nitrogen, phosphorus, potassium three elements, the content of simple nutrients can not be less than 4.0% or 40g/L, the addition of three elements can not be less than 50% or 400g/L, if you see a large number of elements on the packaging bag, one element marked less than 4% or 40g/L, or the total number of three elements less than 50% or 400g/L, Indicates that this type of product is not acceptable. 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 a single trace element with a content of not less than 0.05% or 0.5g/L should be included in the trace element content.

Second, look at the labels on the package for various specific nutrients.

High-quality large amount of element fertilizer is very clear to ensure that the composition (including a large number of elements and trace elements) is marked, and it is a single label, so that the nutrient content is clear, and the people can rest assured. The nutrient content of informal manufacturers will generally use the words of the sum of the content of several elements > a few percent. If so marked, it indicates that the product is irregular.

Three look at the product formula and registered crops

A large number of element fertilizer is a secret fertilizer, high-quality water-soluble fertilizers generally have a lot of secret recipes, from seedling to harvest can find a suitable way to use. The formal fertilizer registration crop is a certain crop or several crops, for the crops that are not registered, there is a need to have local experience.

Four to see whether there are product implementation standards, product generic name and fertilizer registration certificate number

Usually said fully water-soluble fertilizer, in fact, its product common name is a large number of element fertilizer, the common implementation standard is NY/T1107-2020, if the packaging is not this standard, it is not fully water-soluble fertilizer. Many fully water-soluble fertilizer packaging is marked with Gb, indicating that such products do not pass. In addition, it is also necessary to see whether it has a fertilizer registration certificate number, if there is doubt about the product, you can check its fertilizer registration certificate number on the Internet, a large number of qualified elemental fertilizers, fertilizer registration certificate number and manufacturers can be found, if not found, that the product is unqualified.

Five-point dissolution

Dissolving fertilizers in water is the most important way to identify the quality of water-soluble fertilizers. High-quality fully water-soluble fertilizers dissolve quickly in water, the solution is clarified and there is no residue and sediment, if the fertilizer can not be completely dissolved in water, there is residue, indicating that the quality of the fertilizer is not very good.

Six look at the appearance

The particles of good quality water-soluble fertilizer products are uniform and crystalline, and if you see particles of different sizes, especially those similar to compound fertilizer particles, it is best not to buy. Through the above methods, I believe we can help you screen out high-quality and efficient water-soluble fertilizer products to achieve increased production and income. To emphasize, to use an old saying, in the purchase of a large number of elements of water-soluble fertilizer must be: not the most expensive, but to buy the right!