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代写澳洲论文《澳洲银鲈养殖技术探》

论文作者:英语论文网论文属性:职称论文 Scholarship Papers登出时间:2012-01-11编辑:dhj123点击率:6098

论文字数:6262论文编号:org201201110918026733语种:英语 English地区:澳大利亚价格:免费论文

关键词:澳洲银鲈昆士兰省水域条件

摘要:Australia silver perch (Bidyanusbidyanus), also named GanZhi fish, originating in southeastern Australia river Queensland, Australia's east famous freshwater fish economy, our country was introduced in 1996 in a try.

Australia silver perch (Bidyanusbidyanus), also named GanZhi fish, originating in southeastern Australia river Queensland, Australia's east famous freshwater fish economy, our country was introduced in 1996 in a try. This variety temperament moderate, strong ability to adapt to the environment, can be in freshwater ponds, lakes, reservoirs, rivers and salinity 20 ‰ of the saline water in the life, and fish white, no fine thorn, it is a smooth mellow, high nutritional value, is the fish treasures. Here introduced in 2006 in Australia in silver perch in the reservoir area are hex breeding, dropping to about 5 cm length specifications species, the 10 months raise reached 450 ~ 550 g/tail commodity fish specifications, the unit output 26 kg/m2, the price is in 70 yuan/kg above, and the economic benefit is remarkable. Now the Australian silver perch breeding techniques introduced reservoir area are as follows. 代写英语论文www.51lunwen.org
澳洲银鲈( Bidyanusbidyanus) , 又名甘旨鱼, 原产于澳大利亚东南部昆士兰省河流,是澳洲东部有名的淡水经济鱼类, 我国于1996 年引进试养。该品种性情温和, 对环境适应能力较强, 可在淡水池塘、湖泊、水库、河流及盐度20‰以内的咸水中生活, 并且鱼肉雪白、无细刺, 口感爽滑甘美, 营养价值高, 是鱼中珍品。我乡于2006 年引进澳洲银鲈在六角宫水库进行网箱养殖, 投放体长规格为5cm 左右鱼种, 经10 个月饲养达到450~550g/ 尾的商品鱼规格, 单位产量26kg/m2, 售价在70 元/kg 以上, 经济效益显著。现将澳洲银鲈水库网箱养殖技术介绍如下。
一、水域条件与网箱布设
Choose no pollution, water quality and pure and fresh, the perennial more than 5 m depth, more than 1 m transparency and dissolved oxygen is greater than 5 mg/L, and the winds and waves, lesser, water exchange good, the water flow is less than 0.2 m/s, scrooged and convenient transportation, avoid the waters of the reservoir ZhuHangDao set cages. Article 2 in cages strapping polyethylene thick rope or steel wire cable of string in a row, into "a" glyph arrangement Settings, rope, cable fixed in the library at both ends of the tree or ShuiNiZhuang on shore, also can be in the water broke down on fixed, box from 3 m, spaced 15 m.
选择无污染、水质清新, 常年水深5m 以上、透明度大于1m、溶解氧大于5mg/L, 并且风浪较小、水交换良好, 水流小于0.2m/s、通风向阳、交通方便, 避开水库主航道的水域设置网箱。网箱捆扎在2 条聚乙烯粗绳或钢丝索上串成一排, 成“一”字形排列设置, 绳、索两端固定在库岸的大树或水泥桩上, 也可在水面上抛锚固定, 箱距3m, 行距15m。
二、网箱结构
Cages for sizes 5 m x 5 m × 3 m, 2.5 m for underwater depth, the area by 3 by 3 or 3 x 4 knitting string of polyethylene nets a sewing, outer nets garments for the mesh of 2.5 ~ 3 cm, inner lining nets garments for the mesh of 1.5 ~ 2 cm, adding the cages on single cover nets, should be in cages fry before into boxes 7 d in the water. In a square bamboo cages fixed frame on, framework link four corners or empty bubble float to float the canisters support, the bamboo frame side of cages wide than 60 ~ 80 cm, in order to ensure that the nets garment fully open, the bottom corners cages hang sink son, make the bottom of the cages and the walls to prop open level after the water, so the cages inside and outside water exchange, the fish swimming freely. Each area on the surface of the water follows a set food machine, follows a usable steel reinforcement, food net films with sides material make it 80 cm buoyancy box, fixed in the central area, its height is 50 cm, with a flowing cages cover nets phase stick, mouth dipped into the underwater 30 cm, in case shots when feeding buoyancy feed flown out the box.

网箱规格为5m×5m×3m, 水下深度为2.5m, 网箱箱体可由3×3 或3×4 网线编结的聚乙烯网片缝制而成, 外层网衣网目为2.5~3cm, 内层网衣网目为1.5~2cm, 网箱上加设单层盖网, 网箱应在苗种入箱前7d 下水。网箱固定在正方形毛竹架上, 框架四角连结泡沫浮球或空油桶为浮子支撑箱体, 毛竹架的边长要比网箱宽60~80cm, 以保证网衣充分张开, 网箱底部四角吊挂沉子, 使网箱的底部和四壁平整地撑开后沉入水中, 以利于网箱内外的水体交换, 箱内的鱼类游动自如。每个网箱在水面设置浮性食台1 个, 浮性食台可用钢筋、网片等材料做成边长80cm 的浮性方框, 固定在网箱论文英语论文网提供整理,提供论文代写英语论文代写代写论文代写英语论文代写留学生论文代写英文论文留学生论文代写相关核心关键词搜索。

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