为了观测植物根系对肥料、腐殖质、生长激素的反应以及在不同紧实度土壤中根系生长状况等,我们利用不透明的硬质塑料管,制成带有纵向间隔板的无底盆钵,既有助于探索植株根系对不同试验因子的反应,又便于观察测定。其构造如照片所不。管内径为10厘米,高25厘米,0—10厘米(无间隔板)为种床,纵向间隔板(位于10—25厘米) In order to observe the response of plant roots to fertilizers, humus, growth hormone and the growth of root system in different compacted soils, we made non-transparent hard plastic tubes to make bottomless pots with longitudinal partitions, Help to explore the root response of plants to different test factors, but also easy to observe and determine. Its structure is not as pictures. Tube diameter of 10 cm, 25 cm high, 0-10 cm (without partitions) for the seedbed, longitudinal partitions (located 10-25 cm)