Magnesium oxide in water-soluble fertilizers is not only an economically efficient source of magnesium, but also possesses multiple functions such as slow-release magnesium supply, pH regulation, and anti-caking properties. Through rational formulation design, it can balance the needs for both quick-release and long-lasting magnesium supply, making it an important choice of green raw material in the development of modern water-soluble fertilizers.
- Supplies Essential Magnesium Nutrition for Plants
- Magnesium is a core element of chlorophyll, promoting photosynthesis and energy transfer.
- Magnesium oxide is a commonly used, low-cost source of magnesium fertilizer.
- Dissolution and Conversion Mechanism
- It has low water solubility on its own, but can be converted into easily soluble forms such as magnesium sulfate and magnesium phosphate in acidic formulations.
- It forms soluble magnesium complexes with chelating agents like EDTA, citric acid, etc., enhancing utilization.
- Slow-Release Magnesium Source Properties
- It dissolves gradually in the soil, preventing rapid loss (leaching).
- Supports long-lasting magnesium supply, reducing the frequency of fertilization.
- Cost and Logistics Advantages
- Its price is lower than soluble magnesium salts (magnesium sulfate, magnesium nitrate).
- It is stable during storage and transport, less prone to moisture absorption, facilitating transportation and storage.
- Multiple Functions and Formulation Value
- Can be used as a pH regulator, improving the acid-base balance of the fertilizer.
- During manufacturing, it helps with anti-caking and improves flowability.