我们生物小组的同学受所学生态知识的启发,在老师指导下,利用“密闭生态系统”培养苔藓植物,简便易行,便于观察,效果较好。首先选择大小两个长方形玻璃鱼缸。大缸尺寸为46×22.5×25(厘米),小缸尺寸为40×18.5×22(厘米)。分别加入含有机质较丰富的土壤,约占缸内体积的1/3。小缸土略含石灰质,pH 为7.8,含水量18％;大缸 pH7.6,含水量20％。然后在两缸中均种植了石地钱、小墙藓和葫芦藓,并在大缸内又栽种了酢浆草、垂盆草、夏至草、长突仙人球和芦荟等植物;小缸内又栽种了光叶提灯藓、东亚绢藓、风雨花(韭菜花)、月季、葡萄等。所种植物可根据自己需要选择。种植时应注意把需观察假根的苔藓植物种一些在缸的边缘,喜光植物种在阳面。为 Inspired by the students’ ecological knowledge, the students of our biology group, using the “closed ecosystem” to cultivate bryophytes under the guidance of the teachers, are simple and easy to observe and have good effects. First select the size of two rectangular glass fish tank. The size of the vat is 46 × 22.5 × 25 (cm) and the size of the vat is 40 × 18.5 × 22 (cm). Join the rich soil with organic matter, accounting for about 1/3 of the volume of the cylinder. Small soil slightly calcareous soil, pH 7.8, 18% water content; large tank pH7.6, water content 20%. Then planted in a two-cylinder stone money, small wall moss and gourd moss, and in the vat planted oxalis, sarmentosum, summer solstice grass, prickly pear and aloe plants; small cylinder and Planting a light leaf lantern moss, East Asian silk moss, rain flowers (chives), rose, grape and so on. The kinds of plants can be selected according to their needs. Planting should pay attention to the need to observe the moss bryophytes plant some of the edge of the cylinder, hi light plant species in the sun. for