防返潮变质如尿素易吸湿,造成氮挥发损失;硝酸铵吸湿性很强,易结块、潮解;石灰氮和过磷酸钙吸湿后易结块,影响施用效果。因此,这些化肥应存放在干燥、阴凉处。防火避日晒氮素化肥经日晒或遇高温后,氮的挥发损失会加快 Anti-damp deterioration such as urea, hygroscopic, resulting in loss of nitrogen volatilization; ammonium nitrate hygroscopicity is strong, easy caking, deliquescence; lime nitrogen and superphosphate moisture easily caking, affect the application effect. Therefore, these fertilizers should be stored in a dry, cool place. Prevent the sun from drying Nitrogen fertilizer by the sun or encounter high temperatures, the volatilization of nitrogen will accelerate