一、复合肥假劣的识别目前市场上多用颗粒过磷钙假冒磷酸二铵,也有用颗粒过磷酸钙冒充硝酸磷肥或重钙。这几种化肥有着相似的颜色、颗粒和抗压强度,但它们之间在成分种类、养分含量、价格上的差别却很大。可用以下方法来鉴定:1.看外观磷酸二铵在未受潮的情况下,中间呈黑褐色,周边微黄,半透明, First, the identification of counterfeit fertilizer Currently on the market with more than particles of calcium phosphate counterfeit DAP, but also useful as particles of calcium phosphate or calcium nitrate. These kinds of fertilizers have similar colors, granules and compressive strength, but they differ greatly in the types of ingredients, nutrient content and price. The following methods can be used to identify: 1. See the appearance of diammonium phosphate in the case of no moisture, the middle was dark brown, the surrounding yellowish, translucent,