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阐述了底泥、氨氮、亚硝酸盐氮、硫化氢、溶解氧,酸碱度等因素对集约化高产鱼塘水质的影响及控制指标;对于水质调控,提出适当追施化肥,科学投喂,适时加注新水换出部分底层老水,清除过多底泥,定期搅动塘底,灵活开启增氧机,施放净水剂及生物制剂(光合细菌),合理施用鱼药等技术。
The effects of sediment, ammonia nitrogen, nitrite nitrogen, hydrogen sulfide, dissolved oxygen, pH value and other factors on the water quality of intensive high-yielding fish ponds are described. For the regulation of water quality, appropriate topdressing fertilizers, scientific feeding, Note new water out of some of the bottom of the old water, remove excess sediment, periodically agitate the bottom of the pond, the flexibility to open the aerator, the application of water purification agents and biological agents (photosynthetic bacteria), the rational use of fish drugs and other technologies.