Storage of chemical fertilizers in summer requires "four defenses"

Fertilizers with anti-return metamorphic urea tend to absorb moisture easily, leading to nitrogen loss through volatilization. Ammonium nitrate is highly hygroscopic and prone to clumping or dissolving when exposed to moisture. Lime nitrogen and superphosphate also tend to form lumps after absorbing water, which can reduce their effectiveness during application. Therefore, these fertilizers should be stored in a dry and cool place. When storing ammonium bicarbonate, it is crucial to ensure the packaging is tightly sealed to prevent exposure to air. Exposure to high temperatures, such as direct sunlight, can speed up nitrogen loss. Ammonium nitrate may decompose or oxidize under high heat and could even catch fire if exposed to flames. If the fertilizer has already clumped, do not strike it with a hammer, as this could lead to an explosion. It is important to store nitrogen-based fertilizers away from direct sunlight and sources of fire. Ammonia solution and ammonium bicarbonate are highly volatile and must be kept sealed during storage. Nitrogen fertilizers and superphosphates should never be mixed with alkaline materials like lime or wood ash, as this can cause nitrogen to evaporate and reduce the effectiveness of phosphate fertilizers. Superphosphate is corrosive and should not come into contact with skin or metal tools. Ammonia solution is particularly corrosive to copper and iron, so it should be stored in ceramic, plastic, or wooden containers. Additionally, fertilizers should not be stored near seeds, and fertilizer bags should not be used to hold seeds. (Jia Youjiang, Yucheng County Agricultural Bureau, Shandong Province) Farmers Daily

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