生理特性变异[Variation of physiological character]茶树光合作用和呼吸作用的变异。因品种和树龄而异,茶树净光合速率的变化幅度约为同化CO2 3.6—30毫克/(分米3.时)。如龙井种的净光合速率高于鸠坑种,勐库大叶茶高于紫阳种;成年茶树高于幼年和老年茶树;定型叶片高于幼叶和衰老叶。叶的呼吸速率最高,根茎较低;衰老器官比幼年器官的低,花蕾和花瓣的又明显高于幼果。
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