茶树旱热害[Drought and thermal damage] 茶树同时遭受高温和缺水的危害。是旱害的特殊表现形式。中国江南、华南茶区7~8月份盛夏高温季节,部分茶园易发生旱热害。因光照强,气温高,树体与叶温升到45℃左右,空气湿度低,引起生理失水而遭受危害。数天内可使植株生育停滞,茎叶枯焦,叶片脱落,甚至整丛枯死。防救措施见“茶树旱害”。
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