论文部分内容阅读
:1999年 ,在沅江市七子浃乡五四渔场的 2 0hm2 成鱼塘进行了黄颡鱼套养 ,年底共起捕黄颡鱼 3630kg ,新增产值 72 60 0元 ,平均每 667m2 产量、产值分别为 12 .1kg、2 4 2 .0元。其中 3口黄颡鱼套养的成鱼塘 ,总面积 2hm2 ,每 667m2 黄颡鱼产量、产值、利润分别为 2 0 .1kg、4 11元、339元 ,投入产出比 1:5.7。本文对黄颡鱼的池塘套养条件、前景、规格、密度、防病等技术问题进行了初步研究。
: In 1999, yellow cichlids were raised at 20 hm 2 of fish ponds at the May 4 fishing grounds of Qizhixiang Township, Yuanjiang City. At the end of the year, a total of 3630 kg of yellow catfish were caught, with a new output value of 72 60 0 yuan, an average yield of 667 m 2, Respectively 12 .1kg, 2 4 2 .0 yuan. Among them, 3 adult catfish raised in catfish with a total area of 2 hm 2, output per 667 m 2 of catfish, output value and profit were 20.1 kg, 41.1 yuan and 339 yuan respectively, with a ratio of input to output of 1: 5.7. This paper conducted a preliminary study on the technical conditions of the pond catching conditions, prospects, specifications, density, disease prevention and other yellow catfish.