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茶树原属亚热带作物,耐寒性不强,对低温比较敏感。每当月平均气温下降到10℃,即停止生长而进入休眠期。近期的研究进一步表明:茶树能忍耐的绝对最低温度为-6℃～—18℃。不同品种或栽培条件,其抗寒性差异很大,为此解决茶树安全越冬,引进抗寒品种是关键。抗寒性强的品种,叶片较小,叶片解剖结构中栅状组织较厚、层次多、氦基酸尤其茶氯酸含量较高:茶多酚含量低,但L—EGC
Tea tree was originally a subtropical crop, cold resistance is not strong, more sensitive to low temperatures. Every month when the average temperature dropped to 10 ℃, stop growing and into the dormant period. Recent research further shows that the absolute minimum temperature at which tea plants can tolerate is -6 ° C to -18 ° C. Different varieties or cultivation conditions, the cold resistance is very different, to solve the safety of tea overwintering, the introduction of cold-resistant varieties is the key. Cold-resistant varieties, leaves smaller, leaf anatomical structure of the razor-thick tissue, multi-level, higher content of helium acid, tea, tea: polyphenols low, but L-EGC