Ammonium sulfate 21 0 0

Ammonium sulfate 21 0 0 is a commonly used fertilizer, which is suitable for general soil and crops. It can make branches and leaves grow vigorously, improve fruit quality and yield, and enhance crop resistance to disasters. It can be used as base fertilizer, topdressing fertilizer and seed fertilizer. So, what are the precautions for using ammonium sulfate?

1. Not to apply ammonium sulfate in paddy fields. Because under flooding conditions, the soil will be severely hypoxic, and the sulfate ions in it will be reduced to sulfide after ammonium sulfate is applied. Excessive accumulation of sulfide concentration can cause plant root damage and death.

2. Ammonium sulfate 21 0 0 is an acidic fertilizer. On acidic soil, ammonium sulfate should be applied in conjunction with farmyard manure, and should be applied in conjunction with alkaline fertilizers such as calcium magnesium phosphate fertilizer and lime (not mixed application), so as to avoid the increase of soil acidity.

3. Ammonium sulfate can be used as base fertilizer, seed fertilizer and top dressing. When used as basal fertilizer, cover soil should be applied deeply to facilitate crop absorption. When used as seed fertilizer, the amount of application should not be too large, and the control should not exceed 3 kg per mu. Topdressing is the most suitable application method, and the amount of ammonium sulfate topdressing should be determined according to different soil types. For soil with poor water and fertilizer retention performance, it should be topdressed in stages, and the dosage should not be too much each time; for soil with good water and fertilizer retention performance, the dosage can be appropriately more each time. The amount of soil moisture also has a great impact on fertilizer efficiency, especially in dry land, when applying ammonium sulfate, it is necessary to pay attention to watering in time. When topdressing in paddy fields, it should be drained and dried first, and it should be applied in combination with plowing and harrowing at the same time.

nd for a long time, otherwise the soil will become acidic and cause compaction.