In recent years, many vegetable farmers who like to accept new products have begun to apply controlled-release fertilizers to vegetables. Master Li of Dongxia Town, Qingzhou City, Shandong Province is one of them.
However, after using the controlled-release fertilizer, Master Li had a question: Why do you apply certain controlled-release fertilizers yourself? There are many abnormal eggplants in the shed, and the plant growth is very poor. The leaves are thin and the color is light. This kind of controlled release Is the fertilizer fatal?
Controlled-release fertilizers, as the name suggests, use various regulatory mechanisms to delay the release of their nutrients. The current controlled-release fertilizer is a coated fertilizer, that is, a layer of film outside the conventional quick-acting fertilizer particles. The micro-holes in the membrane control the rate of nutrient diffusion outside the membrane, so that the nutrient release rate is consistent with the crop demand. . Because the controlled release fertilizer has an outer coating, even if the controlled release fertilizer is immersed in water, the true controlled release fertilizer will not dissolve in a short time, let alone flush it. Therefore, the “controlled release fertilizer†that can be dissolved in a short period of time is not really a controlled release fertilizer at all.
In this reminder: due to the eggplant in the full fruit period of nitrogen, phosphorus, potassium and other nutrients demand is very large, so the need for timely flushing, but also to wash the rapid dissolution, easy to be absorbed, can play a faster fertilizer. If you want to use long-term controlled-release fertilizer, you should use controlled-release fertilizer as a base fertilizer, but you can't freely believe that you can use controlled-release fertilizer that can rush into the name.
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