论文部分内容阅读
1从包装上鉴别检查标志。国家有关部门规定,化肥包装袋上必须注明产品名称、养分含量、等级、商标、净重、标准代号、厂名、厂址、生产许可证号码等标志;如果上述标志没有或不完整,可能是假化肥或劣质化肥。检查包装袋封口。对包装袋封口有明显拆封痕迹的化肥要特别注意,这种化肥有可能掺假。2从形状和颜色上鉴别①尿素:为白色或淡黄色,呈颗粒状、针状或棱柱状结晶。②硫酸铵:为白色晶体。③碳酸氢铵:呈
1 Identify the inspection mark from the package. The relevant state agencies require that the label of fertilizer, the content of nutrients, grade, trademark, net weight, standard code, factory name, address and production license number must be indicated on the package of fertilizers. If the above signs are incomplete or not, they may be false Fertilizer or inferior fertilizer. Check the bag seal. Special attention should be paid to the seal of the packaging bag obvious signs of demolition, this fertilizer may be adulterated. 2 from the shape and color on the identification ① urea: white or light yellow, granular, acicular or prismatic crystals. ② ammonium sulfate: white crystals. ③ ammonium bicarbonate: was