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| 大规格罗非鱼种池塘围栏越冬技术 | |
| 引用本文： | 郭忠宝,杨军,郭恩彦,罗远光,莫根永,罗永巨.大规格罗非鱼种池塘围栏越冬技术[J].广西农业科学,2011,42(5):552-555. |
| 作者姓名： | 郭忠宝 杨军 郭恩彦 罗远光 莫根永 罗永巨 |
| 作者单位： | 1. 广西水产研究所,南宁,530021 2. 柳州市鱼家乐饲料有限公司,广西柳州,545006 3. 广西人民政府办公厅,南宁,530013 4. 北海市水产技术推广站,广西北海,536000 |
| 基金项目： | 国家公益性行业(农业)科研专项经费项目，现代农业产业技术体系建设专项资金项目，广西直属公益性科研院所基本科研业务费专项项目 |
| 摘 要： | 【目的】探讨大规格罗非鱼种池塘围栏的越冬技术,为罗非鱼养殖提供低成本、高收益的安全越冬技术。【方法】在3个池塘中设置隔水围栏,越冬期陆续抽取地下温水补充注入围栏内,并对围栏内与外塘相近区域水温及水体溶解氧、氨氮、亚硝酸盐氮等水质指标进行监测。【结果】越冬期,除2号池塘外,围栏内水温保持在16~18℃,水体溶解氧的变化范围为3.5~6.0mg/L,氨氮平均值低于0.5mg/L,亚硝酸盐氮低于0.06mg/L;3个池塘罗非鱼鱼种成活率分别为98.0%、62.0%和99.0%。【结论】采用池塘围栏与抽取地下温水注入相结合的越冬模式,能确保大规格罗非鱼种安全越冬且生长效果较好,可在广西范围内推广应用。 |
| 关 键 词： | 大规格罗非鱼种 越冬 池塘围栏 水温 成活率 |
Techniques for over-wintering large sized tilapia fingerlings in enclosure pond |
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| GUO Zhong-bao,YANG Jun,GUO En-yan,LUO Yuan-guang,MO Gen-yong,LUO Yong-ju.Techniques for over-wintering large sized tilapia fingerlings in enclosure pond[J].Guangxi Agricultural Sciences,2011,42(5):552-555. | |
| Authors: | GUO Zhong-bao YANG Jun GUO En-yan LUO Yuan-guang MO Gen-yong LUO Yong-ju |
| Institution: | 1 Guangxi Institute of Fisheries, Nanning 530021, China; 2 Liuzhou Yujiale Feeds Co. Ltd., Liuzhou, Guangxi 545006, China; 3 General Office of the People＇s Government of Guangxi Municipality, Nanning 530013, China; 4 Beihai Fishery Technical Extension Station, Beihai, Guangxi 536000, China) |
| Abstract: | Objective]The present study was aimed to develop over-wintering techniques for large-sized tilapia fingerlings in enclosure pond for culturing them with low cost and high benefits. Method]Three culture ponds （1.20, 1.33, and 1.86 ha area） were selected and 10% of pond area was enclosed by impermeable screen to pump underground warm water （20-24℃） into the screen area to keep the water temperature between 16-18℃. The water temperature, dissolved oxygen, ammonia nitrogen and nitrate nitrogen content, etc., were monitored in water area close to the fence. Result]During the process of over-wintering period, the water temperature in enclosed area was kept between 16-18℃ except in pond No. 2. The dissolved oxygen ranged from 3.5-6.0 mg/L, and the average content of ammonia nitrogen and nitrate nitrogen were lower than 0.5 and 0.06 mg/L, respectively. After culturing for 60 d, the survival rates of tilapia fingerlings in three ponds were 98.0, 62.0, and 99.0%, respectively. Conclusion]Using over-wintering technique, large sized tilapia fingerling can be cultured in winter with better growth, therefore the present technique may be recommended for use in large scale production in Guangxi. |
| Keywords: | tilapia over-wintering enclosure pond fingerling |
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