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取10×30×0.3厘米玻璃2块,中间铺2—4层普通滤纸,滤纸的一侧粘一条座标纸,选饱满无病种子(先在冷水中预浸5—10小时)胚端朝向一侧整齐地摆放在滤纸上一行或多行,盖上另一块玻璃,浸水端用皮筋固定,上端用铁夹固定,保证种子不移位,将此板插入水中,水面稍低于种子。每隔3天换水一次。为防止发霉,种子及一切用具最好用消毒水消毒。用垂直板可进行下述多项实验: 1.比较不同种子的萌发速度作水稻、小麦、玉米、菜豆等种子垂直板各一块,下端浸入清水中,在25℃条件下避光培养。2—3天后观察各类种子的萌
Take 2 pieces of 10 × 30 × 0.3 cm glass, and store 2-4 layers of common filter paper in the middle, one coordinate paper on one side of the filter paper, and choose the full of disease-free seeds (pre-dip in cold water for 5-10 hours) One side or several rows neatly placed on the filter paper, covered with another piece of glass, soaked with rubber band fixed end, the top with iron clamp fixed to ensure that the seeds do not shift, the board into the water, the water slightly lower than the seeds. Change the water every 3 days. To prevent mold, seeds and all appliances best disinfectant disinfection. The vertical plate can be used for a number of experiments: 1. Compare the germination rate of different seeds for each piece of vertical plates of rice, wheat, corn, beans and so on, the lower end immersed in water, cultured at 25 ℃ under dark conditions. 2-3 days after the observation of various types of seeds Meng