Compound fertilizer can distinguish between true and false

The particles of the real compound fertilizer are round and uniform in size, and the particles of the pseudo-composite fertilizer have different shapes, and the phenomenon of crumbs is serious.

With a handful of compound fertilizer, let go and let go at a height of 1.5 meters. Let it fall freely and repeat two or three times. If the sound of the landing sounds, then the false sound is true.

The proportion of compound fertilizer is larger than that of fake compound fertilizer, which is the same as 25 kg compound fertilizer. The volume of real fertilizer is small and the volume of fake fertilizer is large. Place a little compound fertilizer in a damp tray and allow it to absorb moisture for three to four minutes. The moisture absorption speed is false, and the moisture absorption speed is slow.

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