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4)将留有 A、B 左半片叶子的枝条插入水中,放在阳光或灯光下照射,进行光合作用,并保持 A 组叶片干净。5)若干(不少于5)小时后,剪下A、B 留在枝条上的左半片叶子,把表面擦净,编号为 A_2、B_2装袋。6)按公式分别计算 A_2、B_2的总面积。7)A_1、A_2、B_1、B_2分别放在烘干设备中脱水烘干,直至连续两次烘干后称
4) Leave the leaves of left leaves of A and B into the water, and place them in sunlight or light for photosynthesis and keep the leaves of group A clean. 5) After a number of (not less than 5) hours, cut the left half leaves of leaves A and B on the branches and wipe the surface with bags numbered A_2 and B_2. 6) Calculate the total area of A_2 and B_2 according to the formula. 7) A_1, A_2, B_1, B_2, respectively, on the drying equipment dehydration drying, until after two consecutive drying