郸城县境内河道水面资源丰富,发展网箱养殖条件得天独厚。1991年进行网箱试养草鱼获得成功。1993年在晋沟河、黑河设置网箱20个,投放草种鱼2万尾、1100公斤,经过270天的饲养,收获成鱼1.946万尾、1.51万公斤。成活率达97％,折合每公顷产量27.3万公斤。纯收入11万元,经济效益显著。技术要点如下:1、水域条件 河内水质清新,无毒无污染,饵料生物丰富,微水流,水深2米,水面宽阔。2、网箱设置 采用规格为4m×7m×(1—1.5)m、网目4cm的聚乙烯封闭浮动型单层网箱。用4根毛 Dancheng County River water is rich in resources, the development of unique breeding cage conditions. Caged grass carp was successfully tested in 1991. In 1993, 20 cages were set up in Jingou River and Heihe River, 20,000 grass-tuned fish and 1,100 kilograms were raised. After 270 days of breeding, 19,460 fish and 15,100 kilograms of adult fish were harvested. Survival rate of 97%, equivalent to 273,000 kg per hectare yield. Net income of 110,000 yuan, significant economic benefits. Technical points are as follows: 1, water conditions Hanoi water quality fresh, non-toxic non-polluting, rich food organisms, micro-flow, water depth 2 meters, the water is wide. 2, the cage set to use specifications for the 4m × 7m × (1-1.5) m, mesh 4cm closed floating single-layer polyethylene cage. With 4 hairs