Research Progress of Magnesium in Regulating the Growth and Development of Tobacco Products

镁作为植物生长发育所必需的营养元素，在烤烟的农艺性状、光合作用、碳氮代谢、衰老特性、干物质积累等方面发挥着重要作用。适宜的镁浓度能够显著改善烤烟的生长状况，提高烟叶产值，并通过调节叶绿素含量和SPAD值提高光合作用效率。此外，镁通过调控SOD、POD、CAT、APX等抗氧化酶的活性，维持植物体内活性氧代谢的平衡。在碳氮代谢方面，镁参与糖类合成和氮素同化过程，影响作物的产量和品质。镁浓度过高或过低对于烟草的生长均有不利影响。本文系统阐述了镁对烤烟生长发育的影响机制，旨在为烟草生产中镁肥的合理施用提供理论依据。As an essential nutrient element for plant growth and development, magnesium plays an important role in agronomic traits, photosynthesis, carbon and nitrogen metabolism, senescence characteristics, and dry matter accumulation of roasted tobacco. Appropriate magnesium concentration can significantly improve the growth of roasted tobacco, increase tobacco yield, and improve photosynthetic efficiency by regulating chlorophyll content and SPAD value. In addition, magnesium maintains the balance of reactive oxygen species metabolism in plants by regulating the activities of antioxidant enzymes such as SOD, POD, CAT and APX. In terms of carbon and nitrogen metabolism, magnesium participates in the process of sugar synthesis and nitrogen assimilation, affecting crop yield and quality. Too high or too low concentration of magnesium has adverse effects on the growth of tobacco. This paper systematically elaborates the influence mechanism of magnesium on the growth and development of baked tobacco, aiming to provide a theoretical basis for the rational application of magnesium fertilizer in tobacco production.