
小xiao麥mai缺que錳meng早zao期qi葉ye片pian現xian灰hui白bai浸jin潤run斑ban,新xin葉ye脈mai間jian褪tui綠lv黃huang化hua,葉ye脈mai綠lv色se,隨sui後hou變bian褐he壞huai死si,形xing成cheng與yu葉ye脈mai平ping行xing的de長chang短duan不bu一yi的de短duan線xian狀zhuang褐he色se斑ban點dian,葉ye片pian變bian薄bo變bian闊kuo,柔rou軟ruan萎wei垂chui,稱cheng“褐線萎黃症”。