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太阳能养鱼法:在鱼池旁安装采光面积适宜的太阳能热水器,把水加热后注入鱼池,使池水保持适于鱼类生长的温度(22～28C),此法适用于温度较低的地区。陕西省富县鱼种场利用太阳能热水器提高池水温度,促使亲鱼提早成熟产卵,加速了鱼苗培育。经对草鱼对比试验表明,应用该法亲鱼成熟期提早15天左右,产卵量增加25%,鱼苗成活率提高20%以上。
Solar fish farming method: Install a solar water heater with appropriate lighting area beside the fish pond, inject the water into the fish pond after the water is heated, and keep the water temperature suitable for fish growth (22 ~ 28C). This method is suitable for the areas with lower temperature. Fuxian County, Shaanxi Province, the use of solar water heaters, fish ponds to raise the temperature of water to promote mature broodstock early spawning, accelerated fish breeding. The comparative tests on grass carp showed that the maturity of the broodstock was about 15 days earlier by using this method, the amount of spawning increased by 25% and the survival rate of fry increased by more than 20%.