Ammonium sulfate is most suitable for use as a top dressing for crops. The amount of topdressing of ammonium sulfate should be determined according to different soil types. For soils with poor water retention and fertilizer retention performance, it should be applied in stages, and the dosage should not be too much. For soils with good water retention and fertilizer retention, each dosage should be appropriate.
The amount of soil moisture also has a greater impact on fertilizer efficiency, especially in dry land. When applying ammonium sulfate, it is necessary to pay attention to timely watering. As for the paddy field for topdressing, it should be drained and dried first, and attention should be paid to the combination of tillage and application. In addition, there are also significant differences in the application of ammonium sulfate to different crops. For example, when used in fruit trees, it can be applied by ditching, ring application or acupoint application.
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