What is top dressing? What kind of fertilizer can be used as top dressing? What are the specific application methods of top dressing?

Top dressing is fertilizer applied during plant growth to supplement and regulate plant nutrition.

Different crops have different types of top-dressing fertilizers. The commonly used top-dressing fertilizers for crops are nitrogen and potassium fertilizers.

The methods of top dressing generally include flushing, buried application, broadcast application, drip irrigation, intubation application, foliar spraying, etc.

There are many names for top dressing, generally based on the different growth stages of crops, such as seedling fertilizer, millet fertilizer, jointing fertilizer, booting fertilizer, grain fertilizer, spray fertilizer, etc.

The characteristic of top dressing application is that it is relatively flexible. It is mainly based on the element deficiencies shown in different stages of crop growth, and top dressing is appropriate.

Different top dressing methods have very different effects.

For example, in flushing and buried fertilization, granular fertilizers are first placed in the cultivation medium and then watered. This can easily cause fertilizer burn or fertilizer waste.

Extension information Precautions for top dressing When the soil moisture is too high, the top dressing method of applying water-soluble fertilizer directly into the substrate should not be used. At this time, foliar spraying can be used.

Foliar top dressing can be combined with spraying.

This method uses less fertilizer, has quick results, and avoids the fertilizer being fixed by the soil. It can show its advantages when using it when there is obvious nutrient deficiency and the root system is aging in the later stages of flower growth.

In addition to traditional potassium dihydrogen phosphate, urea, potassium sulfate, potassium nitrate and other large-element water-soluble fertilizers (such as top dressing, _Feilang) that can also be used for root top dressing, trace elements or trace elements can also be added to the large amount of elements.

Various amino acid ingredients.