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本文总结了1982—1984年所进行的池塘主养青鱼的鱼类混养密养结构、鱼的生物量与增长量、投饵量与饲料报酬、养殖周期与鱼种培育,以及相关水生态系统中主要生态因子的变化周期等研究成果。设计和进行了主养青鱼和青草鱼并重饲养的两型混养密养结构以及三个产量级别(亩净产鱼500、750、1,000公斤)的对比试验,追踪观测了主要生态因子的相关变化周期,研究了改造鱼池条件、调整混养结构、改善水质、测报溶氧、增氧投饵、培育大规格一、二龄鱼种以及应用免疫防病等综合技术,促进了主养青鱼池塘水生态系统的良性循环,提高了池塘水体生产力。经核产验收:1984年5口、50.68亩试验池平均亩净产994.77公斤,其中3口池达1000公斤以上,2口池在950公斤左右。500、750公斤级池的平均净增重为4.66倍,最高达5.25倍;1000公斤级池的平均净增重为4.17倍,最高的达4.69倍。青、鲤、团、鲫、草等优质鱼比例占净产量的75%左右,净利润率在62.75±8.5%,生态社会经济效益显著。本文还分析得出了主养青鱼亩净产500、750、1000公斤三级池塘的有关鱼种放养、饲养管理、生态条件等方面的主要技术参数。
This article summarizes the nutrient enrichment structures, fish biomass and growth, fish feeding and feed remuneration, breeding cycles and fingerling cultivation, and associated aquatic ecosystems The main ecological factors in the cycle of change and other research results. A two-type polyculture structure was designed and maintained for both parental and grass carp feeding and three production levels (500,750 and 1,000 kg of net production fish per mu) were followed up to observe changes in major ecological factors Cycle, studied the conditions of rebuilding fish ponds, adjusting the structure of polyculture, improving water quality, measuring dissolved oxygen, feeding oxygen, cultivating large-sized primary and secondary species of fish and applying immune prevention and disease prevention and other integrated technologies, and promoted the cultivation of green fish pond water A virtuous circle of ecosystems has increased pond water productivity. Acceptance of nuclear production: 5 in 1984, 50.68 acres of test ponds average yield of 994.77 kilograms per acre, of which 3 pool up to 1000 kilograms, 2 pools at about 950 kilograms. The average net weight gain for the 500 and 750 kg tanks was 4.66 and up to 5.25 and the average net weight gain for the 1000 kg tanks was 4.17 and 4.69, respectively. The proportion of high-quality fish such as green, carp, group, crucian carp, grass and grass accounted for about 75% of the net output, and the net profit margin was 62.75 ± 8.5%. The economic benefits of the ecological society were remarkable. This paper also analyzes the main technical parameters of stocking, feeding and management, ecological conditions and other aspects of the main cultured black mullet Mu 500,750,1000 kg of tertiary ponds.