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- Title
火山石沉积对鱼菜共生系统运行的探究.
- Authors
陈登龙; 张雨翔; 宋佳佳; 陈鹏宇; 温祥珍; 李亚灵
- Abstract
In an aquaponics, excessive accumulation of fish excreta and bait residues on the bottom of the pond may cause further pollution of the water, so the experiment was conducted to investigate the effect of volcanic rocks on the growth of fish and vegetables, water purification and nitrogen and phosphorus utilization efficiency of the Aquaponics. 4 treatments were set up for this experiment: farming carp (F), farming carp and adding volcanic rocks to the bottom of the pond (Fv), planting lettuce on the pond of Fv (Fvs), and planting lettuce on the pond of F (Fs). The results of the 45 d trial showed that the addition of volcanic rocks effectively reduced nitrite nitrogen concentrations and contributed to the accumulation of nitrate nitrogen, and had no effect on fish production, but significantly increased lettuce production by 33.95%(P<0.05): the integrated aquaponics culture system with volcanic rocks (Fvs), had the highest nitrogen and phosphorus utilization efficiency (NUE, PUE), up to 36.80% and 26.14% respectively. In conclusion, it was concluded that the addition of volcanic rocks to an integrated aquaponics could effectively reduce the concentration of nitrite nitrogen, decrease the accumulation of toxic substances in the water, promote the accumulation of nitrate nitrogen and then increase lettuce production, and enhance the utilization efficiency of nitrogen and phosphorus, which could provide a theoretical basis for the effective operation of aquaponics systems.
- Subjects
VOLCANIC ash, tuff, etc.; WATER pollution; FISH growth; WATER purification; AQUAPONICS; LETTUCE; PONDS; FISH stocking
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2023, Vol 25, Issue 7, p207
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2022.0074