In January and July of this year, the National Mandatory Inspection and Quarantine Bureau introduced two essential national standards: GB18382-2001 titled "Fertilizer Identification, Content and Requirements" and GB15063-2001 named "Compound Fertilizer (Composite Fertilizer)". These standards came into effect from the date of production and circulation. Now, how can farmers ensure they are purchasing high-quality fertilizers? Here are some key points to consider.
First, the fertilizer's name must clearly reflect the official terms defined by national or industry standards, such as "compound fertilizer" or "composite fertilizer". If a fertilizer has a specific purpose, it should be indicated in a smaller font beneath the main name, like "potassium sulfate-type compound fertilizer". Be cautious if you see terms like "high-efficiency", "fat king", or "all-element fertilizer"—these may be misleading and not compliant with regulations.
Second, the total nutrient content on the label should include only nitrogen, phosphorus, and potassium, expressed as a percentage. Other elements or compounds should not be included in this total. For example, a 15-15-15 NPK fertilizer should show "Total Nutrients ≥45%". Additionally, each individual nutrient—nitrogen, available phosphorus pentoxide, and potassium oxide—should be listed in order. The single nutrient content must not be less than 4.0%. For binary fertilizers, any missing nutrient should be marked with "0", such as "15-0-10", which means no phosphorus is present. Avoid products that use symbols like "△" instead of clear numbers.
If the fertilizer contains micronutrients or secondary nutrients, these should not be mentioned on the packaging or quality certificate.
Third, if the chlorine ion content exceeds 3.0%, the word "Chlorine" must be clearly labeled on the package to prevent damage to sensitive crops like tobacco or fruit trees. If no chlorine is indicated, the chloride content must not exceed 3.0%.
Fourth, every product must come with a certificate of conformity or quality assurance. This document should include the manufacturing date or batch number, which should also appear on the outer packaging.
Fifth, all compound fertilizers must adhere to the national standard GB15063-2001. The product standard number and serial number should be clearly displayed on the packaging.
Lastly, the manufacturer’s or distributor’s name and address, registered legally and responsible for product quality, must be shown on the front of the packaging.
By paying attention to these details, farmers can make more informed decisions and avoid misleading labels or substandard products. Always check the packaging carefully before making a purchase.
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