好的玉米种子生活力强,营养物质丰富,表面光滑、有光泽。马齿型的玉米子粒扁长,不透明,顶部稍凹陷,形如马齿;硬粒型的玉米子粒圆形,硬而光滑有光泽,半透明。剥开种了,好种子的胚呈现黄白色,有光泽,并且向外的一面略有凹陷。发芽率较低的或无生活力的种子胚部向外凸出,表现胚体积增大、无光泽、较暗淡等。这主 Good corn seed has strong vitality, rich nutrients, smooth surface, shiny. Horseshoe-shaped corn prolate long, opaque, slightly depressed at the top, shaped like a horse teeth; durum corn particles round, hard and smooth and shiny, translucent. Stripped of seeds, good seed embryos appear yellow-white, shiny, and outwardly slightly concave. Germinated or non-viable seed embryos protruding outward, showing the embryo volume increases, dull, dark and so on. This Lord