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盐城市郊西部荡区的大纵湖、楼王、北龙港三个乡镇,1985年集资开挖了2000亩连片精养鱼池,成立了乡镇集体办2个水产养殖场和2个水产垦殖公司,俗称“三乡四场”。1986年以来,该区平均亩产均在650公斤以上,涌现了一批亩产吨鱼,亩纯收入千元以上的养鱼专业户。笔者近几年对该渔区的养鱼技术进行了调查探讨。一、高产池塘的标准及环境条件。“三乡四场”的池塘面积一般是10—15亩,水深2.5—3米。池形呈长方形,东西向,长宽比为5:3。池底向一侧和出水口倾斜,池埂宽10米以上,鱼池坡比为1:2或1:2.5。外坝的高度比河湖历史最高水位高0.5米以上。池塘水源充足,水质清新,无污染,鱼类易消化的浮游生物种类占优势,水中溶氧在5mg/l以上,透明度40厘米左右,PH值在7—7.5之间。每个塘
In the western suburbs of Yancheng, Dahong Lake, Louwang and Beilong Townships were swanked in 1985 with 2,000 mu of contiguous fish ponds and villages set up to jointly run 2 aquaculture farms and 2 aquaculture farms Company, commonly known as “rural three fields.” Since 1986, the average yield per mu in the area has been above 650 kg, and a batch of specialized fish-farming households with a net output of more than 1,000 yuan per mu is produced. In recent years, I conducted a survey on the fish farming technology in the fishing area. First, the standard of high yield ponds and environmental conditions. “Sanxiang four games” pond area is generally 10-15 acres, 2.5-3 meters deep. Pool rectangular shape, east-west, aspect ratio of 5: 3. Bottom to the side and the outlet tilt, pond 埂 width of 10 meters above the pond slope ratio of 1: 2 or 1: 2.5. The height of the outer dam is 0.5 meter above the highest water level of the river and lake. Pond adequate water quality, fresh water, pollution-free, predominant species of fish digestible plankton dissolved oxygen in water above 5mg, transparency of about 40 cm, PH value between 7-7.5. Each pond