一、看包装真正的化肥产品,一般都在袋面上注有肥粒名称、有效成分、生产厂家、肥料质量(氮、磷、钾含量及加入的微量元素含量)、产品净重及标准号:每批出厂的产品附有质量证明书;包装袋缝口整齐。而假化肥,大多数只注明化肥的名称和生产城市,有效成分和含量、生产厂家却没有,这样即使发现问题也无法找到厂家。 =、眼看和嗅味首先看包装袋的新旧及缝口有无变化。其次要打开袋口,看一下化肥,闻肥料的气 First, see the packaging of real fertilizer products, usually in the bag surface note fertilizer name, active ingredient, manufacturer, fertilizer quality (nitrogen, phosphorus, potassium content and added trace elements), the net weight of the product and the standard number: Each batch of products shipped with a certificate of quality; bag sewing neatly. The fake chemical fertilizer, most of them only indicate the name of fertilizer and the production of the city, the active ingredient and content, but the manufacturer did not, so that even if you find the problem can not find the manufacturer. =, See and smell first look at the old and new bags and sewing changes. Second, to open the bag, look at the fertilizer, smell fertilizer gas