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淡水池塘80:20模式养殖鲫鱼是指池塘在收获时鲫鱼产量约占总产量的80%,鲢鳙鱼和肉食性鱼类(黑鱼、鲶鱼、鲈鱼、鳜鱼等)占总产量的20%左右。其目的是提高鲫鱼产量和规格,追求最佳经济效益,改善池塘生态条件。1998～1999年由天津市水产技术推广站主持完成的农业部丰收计划“淡水池塘80:20养鱼模式高产高效技术”项目,推广面积1.9万亩,鲫鱼平均亩产542.7kg,平均尾重322g,亩均利润1696.8元,成活率97.8%,取得了良好的经济效益,社会效益和生态效益。现将项目中采用的主要技术总结如下:
Freshwater Pond 80:20 Model Farmed crucian carp means that the production of crucian carp accounts for about 80% of the total production at the pond harvest. Silver carp and bighead carnivores and carnivorous fish (blackfish, catfish, sea bass, anchovy, etc.) account for about 20% of total production . Its purpose is to raise the production and specification of crucian carp, to pursue the best economic benefits and to improve the pond ecological conditions. From 1998 to 1999, the project of harvesting by the Ministry of Agriculture under the auspices of Tianjin Fisheries Technology Extension Station completed the project of “high yield and high efficiency technology of freshwater pond 80:20 fish farming mode” with the promotion area of 19,000 mu and the average yield of crucian carp of 542.7 kg per mu Heavy 322g, profit of 1696.8 yuan per mu, the survival rate of 97.8%, and achieved good economic, social and ecological benefits. The main technologies used in the project are summarized as follows: