What are the differences between controlled loss of fertilizer and controlled release fertilizer? Both controlled release fertilizers and controlled loss fertilizers are new fertilizers. In theory, the loss of fertilizer can effectively control the loss and waste of NPK and increase the fertilizer utilization rate by about 20%. The controlled release fertilizer mainly delays the release rate of fertilizer nutrients by coating a layer of hydrophobic substances on the surface of the fertilizer granules, so as to obtain a relative balance between the fertilizer supply schedule and the crop physiological demand.
However, this is only a conceptual explanation. In actual operation, absolute “control†does not exist. Agricultural production is greatly affected by natural factors. At present, the control of nutrient release progress cannot be achieved in the world. If strictly speaking, the controllable fertilizer and controlled release fertilizer appearing on the market only have the function of slow-release fertilizer. The reason why it is called “control†is that the merchants exaggerate the effect in pursuit of profit and sell more. It is a donkey and a hoe.
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