无锡市郊区,近几年来,推广养殖早繁草鱼种。一龄草鱼种亩产最高达667公斤,规格每公斤19尾,亩产值3735.94元。相当于常规一龄草鱼种亩产量的3—4倍,第二年冬季就可以达到1.75公斤以上商品鱼规格,缩短了一年商品草鱼的饲养周期。现把一龄草鱼种养殖高产技术要点介绍如下: 一、鱼苗放养前的准备。发塘池面积2—3亩,水深1.5米,排灌水方便,水质良好,池周无杂草,每亩用125—150公斤生石灰消毒。鱼苗下池前一星期先进水50厘米,每亩施人畜粪250—400公斤,一 Wuxi suburbs, in recent years, the promotion of early breeding grass fish species. First-class grass carp species per mu up to 667 kilograms, specifications 19 per kilogram, per-mu yield 3735.94 yuan. Which is equivalent to 3-4 times as much as the mu production of conventional first-class grass carp, and can reach the specification of more than 1.75 kilograms of fish in the following year and shorten the feeding cycle of the grass carp for one year. The first annual grass carp breeding high yield technology points are as follows: First, the fry stocking before the preparation. Fat pond pool area of ​​2-3 acres, 1.5 meters deep, convenient irrigation and drainage, good water quality, weeds week, 125-150 kg per acre with lime disinfection. Fishes under the pool a week before advanced water 50 cm, manure applied per mu 250-400 kg, one