Buy compound fertilizers to see four: see if the label and fertilizer name meet the standard. The label should indicate the name of the fertilizer, the name and address of the manufacturer, the date of manufacture (batch number) and the shelf life. The name of the fertilizer should be marked with the name already specified by the national standard and the industry standard, such as "complex fertilizer" and "composite fertilizer". There are special-purpose fertilizers, which are marked with the small No. 1 font under the product name: such as "composite fertilizer - potassium sulfate type", "composite fertilizer - rice special type". The name of the fertilizer is not allowed to be marked with the words "high efficiency × × ×", "× × fat king", "all elements × ×", otherwise it indicates that there is false, exaggerated propaganda.
Second, look at whether the labeling of nutrient content is standardized. 1 total nutrient content. The percentage of total nutrients of nitrogen and phosphorus pentoxide should be indicated, and other elements or compounds should not be included in total nutrients. 2 single nutrient content. The percentage of the nitrogen-phosphorus pentoxide-potassium oxide should be indicated in the order of the compound, and the single nutrient content of the product should not be less than 4.0%. Binary fertilizers should be marked "0" in the position without single nutrient. For example, 15-0-10 means that the fertilizer does not contain phosphorus pentoxide or phosphorus pentoxide below 4.0%. Single nutrients should not be marked on the package. ±△" typeface. 3 medium and trace elements. If medium or trace elements are added to the compound fertilizer, they must not be marked on the packaging and on the quality certificate (except as required by national standards or industry standards). 4 If the product contains niobium, it should be marked with "nitrogen-containing nitrogen" on the packaging container to avoid the use in the production of phytosanitary vegetables; calcium phosphate fertilizer and other phosphatase-based phosphate fertilizer products should be packaged. The container is marked with "phosphorus-containing phosphorus" to replenish water-soluble phosphorus during use.
Third, see if there is a label for chloride ion content. When the chloride ion content is greater than 3.0%, the label should be marked with "chlorine" to avoid damage to chlorine-repellent crops such as tobacco, fruit trees, and potatoes. Where chlorine is not indicated, the chloride ion content shall not exceed 3.0%.
Fourth, see if the specifications and net weight are reasonable. The new standard is only allowed to be packaged in four sizes: "(50 ± 0.5) kg", "(40 ± 0.4) kg", "(25 ± 0.25) kg" (10 ± 0.1) kg. When there is an additive package in the product within the net content range of each bag, it must be evenly mixed with the raw materials, and should not be put into the bag in a small package.
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