In the pursuit of efficient and high-quality agriculture, scientific fertilization is not only the core to improving crop yields but also the key to enhancing produce quality and protecting soil ecology. Calcium magnesium nitrate, a compound medium-element fertilizer with both “quick-acting” and “multi-functional” characteristics, is becoming increasingly popular as it provides three essential nutrients—nitrogen (N), calcium (Ca), and magnesium (Mg)—in one product. This advan