我们将初中《植物学》课本第45页上的证明植物生活需要无机盐的实验改液体培养法为砂基培养法。即将石英砂用蒸馏水冲洗干净。取两个较高的广口玻璃瓶,将底部截去,成为简状,用纱布包严简底并装入洗净的石英砂,各栽上一株同样大小的健壮植株幼苗,最后把栽有幼苗的培养瓶分别放在盛有土壤浸出液的甲容器(如培养皿)和盛有蒸馏水的乙容器里。为防止容器内水分的过度蒸发,可用硬纸板中央剪洞套在瓶 We will be junior high school “botany” textbook on page 45 to prove that plant life needs inorganic salt experimental liquid culture method for the sand-based culture. About quartz sand rinse with distilled water. Take two higher wide-mouth glass bottles, the bottom of the cut, into a simple shape, with gauze package and Jane into the clean quartz sand, each planted with the same size of robust plant seedlings, and finally planted The flasks with seedlings were placed in a container (such as a Petri dish) containing soil leachate and a container B containing distilled water, respectively. To prevent excessive evaporation of water within the container, available cardboard cuttings in the center of the bottle