霜害 frost injury
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指植物受霜的危害。以耐寒性弱的幼芽、叶和茎等最明显。春季的晚霜或秋季的早霜都能经常引起霜害。与低温造成的冷害相似,在植物耐寒性弱的时期中,由辐射冷却植物体温下降,耐寒性弱的幼芽或叶。片受害特别严重。引起霜害的温度因植物和其他状态而不同。例如茶树的新叶因汁液冻结而死亡,可是冬天的叶在—20℃下却不死亡。
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