茶越冬叶的光合作用速度有随着新芽生长而下降,因而在萌芽前与萌芽后摘除新芽,研究越冬叶的光合作用机能的变化是必要的。用一年生苗,在新芽萌芽前(3月23日)与一芽三叶期(4月21日),分别设置摘除新芽与一芽三叶和无处理试验区,从1981年秋开展,经时越冬,对老叶的光 The photosynthetic rate of overwintering leaves of tea decreased with the growth of new shoots. Therefore, it was necessary to remove new shoots before and after germination and to study the changes of photosynthetic function of overwintering leaves. One-year-old seedlings were planted with extirpated sprouts and one-bud clover and untreated test areas before sprouting (March 23) and one-bud and three-leaf stage (April 21) , Light on old leaves