水雍菜浮床覆盖率对罗非鱼生长状况及养殖水质的影响

doi:10.14088/j.cnki.issn0439-8114.2026.03.012

摘要/Abstract

摘要： 为深入探究水雍菜（Ipomoea aquatica）浮床覆盖率对罗非鱼(Oreochromis niloticus) 养殖系统水质的影响,设置水雍菜生物浮床覆盖率分别为20%（C₂组）、30%（C₃组）、40%（C₄组）的试验组以及未设浮床覆盖的对照组（C₀组）,并采用饱食投喂法投喂罗非鱼。自试验起始,每7 d采集1次水样用于检测水质,具体检测指标包括养殖水体的溶解氧（DO）、总氨氮（TAN）、亚硝酸盐氮（NO₂^--N）和硝酸盐氮（NO₃^--N）浓度,在35 d试验结束时检测罗非鱼体长、体质量等生长指标。结果显示,C₂组、C₃组、C₄组的水质指标和生长指标均优于C₀组;C₄组的TAN浓度显著低于其他处理组（P<0.05）,NO₂^--N和NO₃^--N浓度也最低,且罗非鱼各项生长指标均优于其他处理组;各处理组间DO浓度无显著差异（P>0.05）。综合来看,有水雍菜覆盖的罗非鱼养殖系统的水质净化效果优于传统养殖;当浮床覆盖率为40%时,该鱼菜共生系统的水质净化效果和鱼类生长指标均达到最佳。

关键词: 罗非鱼(Oreochromis niloticus), 水雍菜（Ipomoea aquatica）, 浮床覆盖率, 水质, 饱食投喂, 生长状况

Abstract: In order to further explore the effect of floating bed coverage of Ipomoea aquatica on the water quality of Oreochromis niloticus aquaculture system, the experimental groups with 20% (C₂ group), 30% (C₃ group), 40% (C₄ group) of floating bed coverage of I. aquatica and the control group without floating bed coverage (C₀ group) were set up, and O. niloticus was fed by the satiation feeding method. Since the beginning of the experiment, water samples were collected every 7 days to detect the water quality. The specific detection indexes included the concentration of dissolved oxygen (DO), total ammonia nitrogen (TAN), nitrite nitrogen (NO₂^--N) and nitrate nitrogen (NO₃^--N) in the aquaculture water. At the end of the 35 d experiment, the growth indexes such as body length and body weight of O. niloticus were detected. The results showed that the water quality indexes and growth indexes of C₂ group, C₃group and C₄ group were better than those of C₀ group. The TAN concentration of C₄ group was significantly lower than that in other treatment groups (P<0.05), and the NO₂^--N and NO₃^--N concentrations were also the lowest. Additionally, all growth indicators of O. niloticus in the C₄ group were superior to those in the other treatment groups. There were no significant differences in DO concentrations among the treatment groups (P>0.05). On the whole, the water purification effect of O. niloticus aquaculture system covered with I. aquaticawas better than that of traditional aquaculture. When the floating bed coverage was 40%, the water purification effect and fish growth indexes of the fish-vegetable symbiotic system were the best.

Key words: Oreochromis niloticus, Ipomoea aquatica, floating bed coverage ratio, water quality, feeding to satiation, growth status

中图分类号:

S964.9
X52

黄祎宁, 林倩倩, 朱心妍, 申旭红. 水雍菜浮床覆盖率对罗非鱼生长状况及养殖水质的影响[J]. 湖北农业科学, 2026, 65(3): 78-83.

HUANG Yi-ning, LIN Qian-qian, ZHU Xin-yan, SHEN Xu-hong. Effects of Ipomoea aquatica floating bed coverage ratios on growth status and aquaculture water quality of Oreochromis niloticus[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(3): 78-83.

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