Shi鱼养殖技术浅谈

介绍了Ｓｈｉ鱼的生物学特征；并从养殖场地的选择，养殖设备的选择，苗种的培育以及Ｓｈｉ鱼的养成等几个方面介绍了Ｓｈｉ鱼的养殖技术，最后分析了Ｓｈｉ鱼养殖在我国的发展前景。     

池塘主养团头鲂鱼种高产技术试验

试验了主养团头鲂的合理放养密度；配养品种的最佳选择及放养比数；优质配合颗粒饲料；驯化投饵；水质调控等高产技术。试验结果：１９．５９亩水面，总净产鱼种１３１３０．０ｋｇ，平均亩净产鱼种６７０．０４ｋｇ，其中团头鲂亩净产３９７．５０ｋｇ，平均尾重３３．９７克，亩纯收入３３５０．６６元，投入产出比为１：２．３３。     

海水养殖新方法——沉箱养鱼法

广东省渔民沿用多年的网箱养鱼法,在不久的将来将会被一种更先进、更科学的养殖法——沉箱养殖法所取代。据悉,前不久,广东省有关科研部门已把沉箱养鱼法列入星火发展计划,并已向渔民推广使用。这项海水沉箱养殖法将成为发展海洋养殖业的新方向。 海水沉箱养鱼法是近年来日本发展起来的一种养殖新技术、新方法,1997年被引入我国,并进行小范围试验。沉箱养鱼法的具体做法是:     

大力加强海洋生物技术的研究

我们即将进入海洋世纪。海洋生物技术或海洋生物工程自从８０年代起就受到科学家的重视,发展一直非常迅速。第四届国际海洋生物技术会议去年在意大利召开,进行了５个大会讲演（Ｋｅｙｎｏｔｅｌｅｃｔｕｒｅ）,由著名科学家、斯坦福大学教授Ａ．Ｋｏｒｎｂｅｒｇ等５人做了报告;此外,还有８场小组报告会（Ｏｒａｌｓｅｓｓｉｏｎ）,４场登贴报告会（Ｐｏｓｔｅｒｓｅｓｓｉｏｎ）和１１个讨论会（Ｗｏｒｋｓｈｏｐ）。参加会议的有１０００多人,仅摘要集就有３６１页之多。这个会议的首次预备会议是１９８９年在日本东京召开的,当时…     

希腊水产养殖业的发展

希腊的水产养殖业起步于1951年。近年来,由于希腊气候变暖,在1.5万公里海岸线上的捕捞渔业生产逐年减产。受社会、自然环境的影响,希腊加入了EU后,才重视海水鱼的鲷科鱼类及鲈鱼的集约式养殖。1992年养殖总产量突破1.1万吨,1994年高达2万吨。在此期间。国家为振兴水产养殖业,向各养殖经营     

可持续发展是海水养殖业兴衰的关键

海带筏式人工养殖在５０年代形成产业化以来,我国海水养殖获得全面发展。最有影响当属海藻、对虾和扇贝以及最近涌起的网箱养鱼热潮。它们都是科研成果转化为生产力的结果,对推动海水养殖业的发展和地方经济的发展都起着重要作用。截止１９８９年,我国海带产量达２７００００ｔ,居世界首位;对虾产量在１９８８年达１９０００ｔ,居世界首位;扇贝产量在１９８８年达１９００００ｔ［１］。近几年,海洋鱼类养殖又获得更加飞速的发展,将有力地推动我国海水养殖业（尤其海洋鱼类）的迅速发展,并对全国产生重要的影响。根据以往的成功经…     

东太湖及其网围养鱼区的底栖动物以及环境质量的初步评价与区划

本文初步分析了东太湖及其网围养鱼区的底栖动物的种类组成、数量、生物量、多样性及其分布特点;选用三个生物数量指标:Good—night指数、King和Ball指数以及颤蚓类密度。运用系统模糊聚类方法,对网围养鱼区的环境质量作出初步评价和区划;论述了在东太湖适当地开展网围养鱼并控制其规模的必要性,对如何控制网围养鱼所造成的污染提出初步建议,供有关部门参考。     

Forms and Balance of Nitrogen and Phosphorus in Cage Culture Waters in Guangdong Province, China

In order to approach the characteristics of nitrogen and phosphorus pollution caused by cage culture and the balance of nitrogen and phosphorus during the process of cage culture, a monitoring was conducted in Daya Bay of Guangdong Province, China from April 2002 to Jane 2003. The results show that the concentrations of total nitrogen (TN) in the waters at the sites with five and ten years of cage culture history are 1.8 and 2.3 times of that at control site respectively. Ammonium (NH3-N) is the main form of nitrogen in spring while nitrate ( NO3 -) in winter. The concentrations of TN, total dissolved nitrogen (TDN) and dissolved organic nitrogen (DON) are highest in autumn. The concentration of phosphorus increases with the increasing of the culturing time, among which phosphate ( PO 34-) increases most obviously. The concentrations of total phosphorus (TP) and total dissolved phosphorus (TDP) are highest in autumn. The nitrogen and phosphorus are accumulated significantly in the sediment of cage culture area. The model of N balance in the cage culture area: bait (70.62%) fry (0.28%) input by tide (14.8%) release from sediment (14.3%) = harvest of adult fish (12.07%) deposition into sediment (28.75%) output by tide (56.18%) others (3.00%). The model of P balance: bait (83.11%) fry (0.17%) input by tide (12.23%) release from sediment (4.49%) = harvest of adult fish (8.43%) deposition into sediment (48.59%) output by tide (41.94%) others (1.04%). In one fish growth year, the contents of nitrogen and phosphorus in harvest of adult fish are only 17.0% and 10.1% of the contents of nitrogen and phosphorus in fish bait and fry, wherein 83% of nitrogen and more than 89% of phosphorus in fish bait became marine pollutants.     

盐碱地养鱼

在甘肃酒泉地区试验田里,上海科研人员历经3年,靠养鱼、种草等科学方法,让白花花的不毛之地肥了、绿了。经测算,仅盐碱地池塘养殖的亩产效益就达1000元,并形成一种盐碱地改良新模式,具有良好应用推广价值。