"鱼菜共生"系统 "走过路过，不要错过，刚捞上来的鲈鱼开卖咯！"日前，大关小学教育集团申花校区的鱼市摊位很 热闹，学生们吆喝着，家长们排着队购买，不到10分钟，鲜活的鱼儿就被抢购一空。"来晚了，这鱼太 抢手了！"一位家长感慨。 这些鲈鱼从哪里来？孩子们指向了学校农学院的"鱼菜共生"鱼池，这里养了100多尾鲈鱼。"养了半 年多了！这回让爸妈也尝尝我们的'劳动成果'！"一位学生笑着说。 这套"鱼菜共生"系统科技感满满。"鱼池是不需要换水的。"申花校区品牌文化中心主任缪来建老师 介绍，这是一套潮汐循环系统，水池上方阶梯状铺设了火山石种植蔬菜，通过水泵把水抽上来后灌溉蔬 菜，火山石可吸附鱼的排泄物作为植物生长的养分，过滤后的水通过管道再回流到水池。 据了解，大关农学院占地面积约3亩，学生将农场规划成鱼菜共生区、班级种植区、艺术花卉区等6 大区块。主城区的学校用地寸土寸金，这么大一块地用作农场有点"奢侈"，但学校却觉得很值，孩子们 不仅锻炼了劳动能力，也在探索中掌握了跨学科知识。 当天，记者看到一辆挖掘机正在作业。学校相关负责人介绍，这里原本种了不少茶树，孩子们细心 呵护两年多，茶树生长却不理想。邀请专家实地查看后，才 ...

Core Insights - The "fish-vegetable symbiosis" demonstration base in Pankeng Village, Jiexi County, represents a significant innovation in modern agriculture, showcasing a sustainable model that integrates aquaculture and agriculture without traditional farming methods [1][2][3] Group 1: Project Overview - The project is a collaboration between Pankeng Village and Guangdong Yonggao Agricultural Co., Ltd., with the first phase completed and operational by January 2025 [2] - The system utilizes circular fish ponds and sand-based vegetable cultivation, eliminating the need for water changes in fish farming and fertilizers in vegetable growing [2] Group 2: Technological Advancements - The fish-vegetable symbiosis system has achieved a nitrogen utilization rate increase from 30% to 85%, and water resource recycling rate exceeds 90% [2] - The output per unit area has improved by 3 to 5 times, with a 30% reduction in vegetable growth cycles and a 50% increase in fish production [2] Group 3: Environmental Impact - The system promotes zero pollution and sustainable development, avoiding the use of chemical fertilizers and pesticides, which are common in traditional agriculture [3] - The natural biological control system significantly reduces pests, contributing to a healthier ecosystem and serving as a model for ecological agriculture [3]