Ammonium sulfate, commonly known as fertilizer powder, is the earliest nitrogen fertilizer produced and used at home and abroad, which can make branches and leaves grow vigorously, improve fruit quality and yield, and enhance crops' resistance to disasters. It is usually treated as a standard nitrogen fertilizer, with a nitrogen content of between 20% and 21%.
For different soils, ammonium sulfate is most suitable for neutral and alkaline soils, but not for acidic soils. The main application methods are as follows:
1) As a base fertilizer. It is necessary to apply deep soil cover to facilitate the absorption of crops.
2) Top dressing. This is the most appropriate method of application.
The amount of ammonium sulfate topdressing is determined according to different soil types. For the soil with poor water and fertilizer retention performance, it should be applied in stages, and the amount should not be too much each timeFor the soil with good water and fertilizer retention performance, the amount can be appropriately increased each time. The amount of soil moisture also has a greater impact on fertilizer efficiency, especially in dry land, and ammonium sulfate must be watered in time when applied.
As for the top dressing of paddy fields, it should be drained and dried first, and attention should be paid to the simultaneous application of tillage and rake. In addition, there are obvious differences in the application of ammonium sulfate for different crops, such as when used for fruit trees, it can be applied in ditches, rings or holes.
3) It is more suitable for seed fertilizer. There is no adverse effect on seed germination.