Lemongrass (scientific name: Cymbopogon citratus (DC.) Stapf) is a dense, fragrant perennial herb of the grass genus Citronella, also known as citronella, Lemongrass, hydgrass, lemongrass, etc. The whole plant of lemongrass can be used, and the leaves and stems of fresh grass or dried plants have a strong lemon flavor, which can be used as seasoning for soups and meat foods, and lemongrass tea can also be made for brewing [13]. Its whole grass and flowers can be used as medicine and have certain medicinal value [10]. As a feed additive, lemongrass has a strong antibacterial effect, and its application in animal breeding can improve the quality and flavor of meat, enhance the antioxidant function and immunity of animals, and thus improve the economic benefits of farming [4]. In addition, its stems and leaves extract lemon essential oil, which can be used to make perfume and soap [12]. In southern China, lemon grass cultivation is mainly used for garden greening and planting in flower border, and in northern China it can be potted.