南方农业学报2011，Vol.42Issue(5)：552-555,4.
大规格罗非鱼种池塘围栏越冬技术
Techniques for over-wintering large sized tilapia fingerlings in enclosure pond
摘要
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.关键词
大规格罗非鱼种/越冬/池塘围栏/水温/成活率Key words
tilapia/ over-wintering/ enclosure pond/ fingerling分类
农业科技引用本文复制引用
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].南方农业学报,2011,42(5):552-555,4.基金项目
国家公益性行业(农业)科研专项经费项目(3-49) （农业）
现代农业产业技术体系建设专项资金项目(nycytx-48) （nycytx-48）
广西直属公益性科研院所基本科研业务费专项项目(2060302GXIF-2008-01) （2060302GXIF-2008-01）
