Growth reduced, stems thin, tillering suppressed, leaves small with acute angles to stems; leaf bases and lamine with strong, red-purple tinting, then red-brown and withering.

• 大麦幼苗缺磷：生物量减少，茎细，分蘖受到抑制，叶小，叶基出现深紫红色直至变成红褐色而枯萎。