一般处理叶片取得叶脉的方法是碱解法和酶解法。碱解法是将5克Na_2CO_3和7克NaOH溶于200毫升水中,煮沸后放入叶片,继续煮沸约15分钟(时间长短视叶片老嫩和质地而定)。取出叶片用清水冲洗,用毛刷刷去叶肉组织。也可用4%烧碱溶液浸泡叶片一两天,再刷去叶肉组织。这种方法的缺点是碱解时间不易掌握,时间短了,叶肉组织不易刷净,时间长了,细脉不易保全。酶解法是用果胶酶分解细胞壁间的原果胶,使叶肉细胞相互离散,而取得叶脉。这种 The general method of leaf to obtain leaves is alkaline hydrolysis and enzymatic hydrolysis. Alkali method is to dissolve 5 g Na_2CO_3 and 7 g NaOH in 200 ml water, boil and put into the leaves, continue to boil for about 15 minutes (the length of time depending on the leaves old tender and texture). Remove the leaves with water rinse, brush brush to the leaf tissue. Can also be 4% caustic soda solution soak leaves for a day or two, and then brush to the leaf tissue. The disadvantage of this method is not easy to grasp the alkaline hydrolysis time, time is short, the net is not easy to brush net mesophyll, a long time, the vein is not easy to preserve. Enzymolysis is the use of pectinase decomposition of the original pectin between the cell walls, so that mesophyll cells separated from each other, and obtain veins. This