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《大规格吉富罗非鱼种塑料大棚越冬技术.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、南方农业学报2011,42(8):999—1002JournalofSouthernAgriculturehttp://www..fnyxb.coal大规格吉富罗非鱼种塑料大棚越冬技术杨军t,郭忠宝z,李德鹏3,郭恩彦2,肖俊2,罗永巨z’(1柳州市鱼家乐饲料有限公司,广西柳州545006;2广西水产研究所,南宁530021;3哈尔滨市农业科学院水产研究分院,哈尔滨150070)摘要:【目的】探讨大规格吉富罗非鱼种甥料大棚越冬技术,为我国南方罗非鱼产业提供低成本、高收益的安全越冬模式。【方法】在柳州市沙塘试验基地的两个池塘r:搭建塑料大棚,其中1个池塘在越冬期陆续抽取地下水补水调温,
2、分别定期检测大棚内外池塘水温及大棚内池塘水体溶解氧、氨氮两个水质指标。【结果】越冬期。大棚内池塘水温比较稳定,抽取地下水补水的池塘水温保持在17.0~22.5。C,未抽取地下水补水的池塘水温也能保持在16.0~21.5。C;大棚内池塘水体溶解氧变化范围为2.5—5.0mg/L,氨氮变化范围为0.47~0.93mg/L;两个池塘大规格吉富罗非鱼种成活率分别为98.o%和99.o%。越冬培育后其规格分别为0.40和0.38kg/尾:【结论】采用翅料大棚越冬模式,大规格吉富罗非鱼种能安全越冬且生长效果良好,其方法简便、效果良好,若能M时搭配抽取地下水补水调温,效果更佳,但必须控制好放养密度
3、。关键词:吉富罗1仁鱼种;池塘养殖;塑料大棚;越冬技术中图分类号:$965.125文献标识码:A文章编号:2095—1191(2011)08—0999一04Techniqlforirwintq"glargsizedGIFTtilaF"1echniquelOrover-winteringlargeSlzed1tllaplafingerlinl乏s‘pondscoveredwithplasticshedlmgerlingsinpondscoveredWitllplasticSIIedYANGJunl,GUOZhong-ba02,LIDe-pen93,GUOEn-yan2,XIA0Jun2
4、,LU0Yong-ju2’(1LiuzhouYujialeFeedsCo.,Ltd,Liuzhou,Guangxi545006,China;2GuangxiInstituteofFisheries,Nanning530021,China;3FisheriesResearchSection,HarbinAcademyofAgriculturalSciences,Harbin150070,China)Abstract:【Objective]Thepresentstudywasaimedtodevelopalowcosthighbenefitover-winteringculturetee
5、h·niqueforlarge—sizedGIFTtilapiafingerlingsinpondscoveredwithplasticshedinSouthernChina.【Method】7FwoculturepondscoveredwithplasticshedswereselectedatShatangexperimentbaseandthewatertemperatureinoneofthepondswasregulatedbypumpingundergroundwarnlwater.Thetemperatureofpondwaters,dissolvedoxygencon
6、tentandamino-nianitrogencontentweremeasured.【Result】Theresultsshowedthatthewatertemperatureinpondcoveredwithplasticshedremainedstable.Thewatertemperatureinpondwithandwithoutsupplyofundergroundwaterrangedfroml7.0-22.5and16.0-21.5℃.respectively.Thedissolvedoxygenandammonianitrogencontentrangedfro
7、m2.5-5.0and0.47—0.93ms/L.respectively.ThesurvivalratesofGIFTtilapiaspecieswas98.0and99.O%andtheaverageindividualweightreachedO.40and0.38kg,respectively,afterover-winteringculture.【Conclusion】Applicationofover-winteringculturetechn
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