Ammonium sulfate is mainly used in places where the nutritional needs of growing plants require the supplementation of N and S. Since it only contains 21% N, there are other fertilizer sources that are more concentrated and more economical to handle and transport. However, it provides an excellent source of S, which has many essential functions in plants, including protein synthesis. It is one of the most popular inorganic nitrogen fertilizers in the world, with rapid release and quick action, effectively promoting the growth of grains. As a basal or supplementary fertilizer, it can be directly applied to various soils, seeds, and crops. It is highly suitable for rice, tea, grass, vegetables, and fruit trees.

• Rich in nutrients: It contains about 21% nitrogen and approximately 24% sulfur, providing two essential nutrients simultaneously.
• Quick-acting fertilizer effect: Dissolves rapidly; ammonium ions can be quickly absorbed by plant roots to meet growth needs.
• Soil improvement: In alkaline soil, it can lower soil pH and increase the availability of trace elements like iron and manganese.
• Good physical properties: Not easy to absorb moisture or cake, convenient for storage, transportation, and aerial fertilization.
• High cost-performance ratio: Affordable price with remarkable effects, reducing agricultural production costs.

It is applicable to general soils and a variety of crops, such as wheat, corn, rice, cotton, sweet potatoes, bast fibers, fruit trees, vegetables, etc. It is especially suitable for neutral and alkaline soils. Long-term use on acidic soils may lead to soil acidification and compaction.

It cannot be in contact with or mixed with alkaline fertilizers or alkaline substances for application to prevent the volatilization and loss of nitrogen. Long-term application may increase the soil acidity. Some lime or organic fertilizers can be applied in appropriate amounts to improve the soil structure.