近年来,许多地方发生玉米花白苗病。其症状是,在叶片基部向上约2/3处,沿主脉两侧出现黄白色带状失绿区,叶缘及时尖仍为绿色。严重时,叶片有无色小斑点,逐渐连成片,叶肉坏死,形成半透明的薄膜。病轻的,叶色可自然恢复正常;重者叶片花白色可延至生育后期,常造成节间短和结小棒现象,产量明显降低。 In recent years, popcorn disease occurs in many places. The symptom is that at the base of the blade, about 2/3 upward, there are yellow-white band-shaped green areas along the two sides of the main vein, and the leaf edge and the temporal tip are still green. In severe cases, the leaves have colorless spots, and gradually even into pieces, leaf necrosis, the formation of translucent film. Slightly, leaf color can naturally return to normal; heavy leaf flower white can be extended to late growth, often resulting in internode short and knot small stick phenomenon, the output was significantly reduced.