Potassium sulfate is a chemically neutral and physical acid fertilizer. It is generally suitable for various soils and various crops, especially chloride. Potassium sulfate can replace chlorine as a good potash fertilizer. The specific application method of potassium sulfate compound fertilizer is as follows:
1. Used as a basic fertilizer: When potassium sulfate compound fertilizer is used as a basic fertilizer in arid areas, it is necessary to apply a deep covering of soil to reduce the solidification of potassium crystals and promote the absorption of crop roots.
2. Used as top dressing: Generally, potassium has a low migration rate in the soil, so it needs to be applied in dense strips or holes to make it penetrate into the soil with dense roots to promote crops to absorb the required nutrients.
3. Used as seed fertilizer: usually used as seed fertilizer, the dosage per mu is about 3-5 kg.
4. Extra-root top dressing: It can be formulated into 2%-3% extra-root top dressing solution.