今日要闻

你们真的不知道在中国养小龙虾有多难!

2017-09-19 13:28:44 来源:中国农机网 阅读量:50768 评论

导读:据媒体报道,小龙虾学名克氏原螯虾,原产美国,1930年随着美国商船进入日本境内。每年夏秋之际(5-11月)北海道钏路市阿寒湖旁,都会有人前来捕获一种中国人很熟悉的水产:小龙虾。但是当地捕获小龙虾并非为了一尝美味,而是严密控制这种外来物种的扩张,防止破坏湖水生态。

  【中国农机网 本站原创】每年5月下旬开始,长江以南的地区就是吃小龙虾的天堂,比如湖北湖南小龙虾餐馆的叫卖,“吃虾子开始了,吃虾子开始了,本店特惠XXX”。因为在6月到8月,这期间的小龙虾为肥美。殊不知,小龙虾在日本却成为了当地外来物种祸害的典型代表。
 
  据媒体报道,小龙虾学名克氏原螯虾,原产美国,1930年随着美国商船进入日本境内。每年夏秋之际(5-11月)北海道钏路市阿寒湖旁,都会有人前来捕获一种中国人很熟悉的水产:小龙虾。但是当地捕获小龙虾并非为了一尝美味,而是严密控制这种外来物种的扩张,防止破坏湖水生态。
 
  由于小龙虾繁衍太快,1980年代开始当地政府允许渔民围捕小龙虾。当地小孩子有时候也会帮忙捉虾,每年大约有4吨的收货量。但是小龙虾的繁衍速度实在太快,单靠捕捞完全无法根除这种生物。所以当地的大学、农业研究所等对小龙虾的繁殖习惯、生活习性进行跟踪观察,以确定更科学的驱逐方法。
 
  在阿寒湖捕获的小龙虾,也会被当地人民尝试送到东京等大城市里当成食材。但是这部分数量很少,贩卖小龙虾的收入也只占了渔民总收入的4%。因此,大家对卖小龙虾还是没有太大的兴趣。
 
  那些多余的小龙虾怎么办呢?那只好当场人道毁灭,渔民直接踩碎了,当成肥料了。网友大呼,这又在骗我们去日本吃虾的节奏。或许,北海道当地人民真的不知道在中国为了吃虾,养殖的过程有多么艰辛。
 
  养虾也是技术活,不要简单地以为人工养殖淡水河虾,只需定时投放饲料。
 
  首先,育苗设施有讲究。工厂化育苗设施主要有室内孵化池、台苗池、供水系统、供气系统及应急供电设备等。繁殖池、育苗池的面积一般为12~20米²,池水1米左右,建有进排水系统及供气设施,进排水管道以塑料制品为好。
 
  其次,水源是基本也是重要的因素,它决定着水质条件和养殖成败。一般要求水源稳定、充足、清洁、卫生、水温适宜,水质良好,无任何污染,符合国家渔业水质标准,同时要求注、排水方便,且单排单注。在注、排水口要建好拦鱼网具,既避免敌害生物及野杂鱼入池,又可防止各种养殖品种的逃逸。
 
  第三,要增产须调节水质。精养池塘应配备专门的增氧机,一般在晴天的中午2时-3时开机增氧,有浮头危险时也可开机增氧。增氧机具有增氧、搅水和曝气的功能,是目前有效的改善水质、防止浮头、提高产量的专用养殖机械之一。因此,在池塘养殖小龙虾时,高产池塘需要使用增氧机。目前,我国已生产出喷水式、水车式、管叶式、涌喷式、射流式和叶轮式等类型的增氧机,其中以叶轮式增氧机增氧效果好,在小龙虾池塘养殖中使用也广泛。
 
  据水产专家试验表明,使用增氧机的池塘净产可增长14%左右。在高产池塘里合理使用增氧机,具有以下作用:一是促进池塘 内物质循环的速度,能充分利用水体;二是提前开启机器,能有效预防浮头,稳定水质;三是在浮头发生时,开启增氧机,可直接解救浮头,防止池塘进一步恶化为泛塘现象;四是可增加鱼种和小龙虾苗种的放养密度和增加投喂施肥量,从而提高产量。
 
  虽然,高产养殖小龙虾的技术不止这些,但足以看出,这个在北海道*繁殖,被视为外来入侵生物的小龙虾,在中国人工养殖却还是个精细活。
 
  注:中国农机网原创,转载请注明出处,违者必究!
 
  资料数据参考:水产资料大全
 
  图片来源:互联网
 
我要评论
文明上网,理性发言。(您还可以输入200个字符)

所有评论仅代表网友意见,与本站立场无关。

产品推荐 更多

[{"ID":"2872026","Picture":"mt0002/aa48a738dd698764e8829fab8051655ab8310fb6fa2526b73829d39e5255ff7a90df997e5b9dbf40.jpg","PictureDomain":"img80","Name":"手持式VOC检测仪厂家","Type":"HNAG900-VOC-F","Descrip":"HNAG900-VOC-F便携式VOC检测仪可以对大气中VOC气体进行移动检测,可灵活搭配不同种类的传感器,最多可任意搭配 6 种,主要检测原理有电化学、红外、催化燃烧、热导、PID 的环境监测仪器供应商等。检测仪采用进口传感器结合高速、高精度处理电路,具有信号稳定,精度高、重复性好等优点。","CompanyName":"深圳市霍尼艾格科技有限公司","CompanyID":"133413","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"214","City":"深圳市","Address":"深圳市","PropertysValue":"","HitNumber":"62","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171528","StandUrl":"/st133413","UpdateTime":"2024/3/29 0:08:53","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102872026","UserID":"146402","PriceType":"0","PictureID":"1796284","CompanyTypeID":"5","Tag":"","LinkMan":"陈洁凤","TelPhone":"86-0755-84655796","ClassName":"其他","ComProduct":"固定式气体检测仪,便携式气体检测仪,多合一气体检测仪,粉尘检测仪,空气质量检测系统,易燃易爆有毒有害气体检测报警设备,环境检测分析仪器,水质分析仪","BrandNameCH":"","IsShow":"2","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"4355","MarketUpdateTime":"","CreateTime":"2023/12/16 14:15:24","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"18924603992"},{"ID":"2722027","Picture":"dabac5fac07fb39aeabe23b30556df39bc381edcbb14ab61e8d817c3c512f1aec0fd4689b9de5dc5.jpg","PictureDomain":"img68","Name":"全自动农情监测设备公司","Type":"WX-Q2","Descrip":"农情监测设备WX-Q2可对不同的农业生产环境及对象进行监测监管,通过传感设备检测环境的物理参数,对土壤、虫情、气象、苗情等生产环境状况进行实时动态监控","CompanyName":"山东万象环境科技有限公司","CompanyID":"129287","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"153","City":"潍坊市","Address":"潍坊市","PropertysValue":"","HitNumber":"109","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171527","StandUrl":"/st129287","UpdateTime":"2024/3/29 0:07:28","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102722027","UserID":"142276","PriceType":"0","PictureID":"1685492","CompanyTypeID":"5","Tag":"","LinkMan":"毛志磊","TelPhone":"0536-2117918","ClassName":"其他","ComProduct":"气象站,土壤墒情监测站,负氧离子监测站,非洲猪瘟检测仪,cems烟气监测系统","BrandNameCH":"","IsShow":"1","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"16437","MarketUpdateTime":"","CreateTime":"2023/2/26 5:32:17","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"15666889815"},{"ID":"2897343","Picture":"mt0001/99c876c5d9ae48d93fda42c18fb84f0f70fca54ec46cb88450bd00066de35b9cac496a295bfedab3.jpg","PictureDomain":"img69","Name":"水泥胶砂搅拌机多少钱","Type":"","Descrip":"新标准行星式水泥胶砂搅拌机符合我国执行国际强度试验方法(ISO679)的标准设备。也可代替JC/T722用作 GB/T17671水泥胶砂试验方法的搅拌机。并可用作美国标准、欧洲标准、日本标准水泥试验的净浆、砂浆搅拌机。本机是水泥厂、建筑施工单位、有关专业院校及科研单位水泥试验室*的设备之一。符合JJF(建材)123-2021 行星式胶砂搅拌机校准规范要求","CompanyName":"河北精威试验仪器有限公司","CompanyID":"134175","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"5","City":"石家庄市","Address":"石家庄市","PropertysValue":"","HitNumber":"54","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171527","StandUrl":"/st134175","UpdateTime":"2024/3/29 0:07:25","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102897343","UserID":"147165","PriceType":"0","PictureID":"1809229","CompanyTypeID":"5","Tag":"","LinkMan":"销售经理","TelPhone":"","ClassName":"其他","ComProduct":"500T反力框架,千斤顶校验仪,反力架,混凝土试验仪器,沥青试验仪器,公路试验仪器,土工试验仪器,水泥试验仪器,恒温恒湿试验箱,电子万能材料试验机","BrandNameCH":"","IsShow":"1","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"2850","MarketUpdateTime":"","CreateTime":"2024/1/22 20:19:43","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"13363827696"},{"ID":"2860630","Picture":"mt0001/d939ceae0c7984b8324ca73c5065e9998e4696cbbb011db3d318accf63ede07f876d96fac24d1d9e.png","PictureDomain":"img45","Name":"进口AB液质","Type":"AB 5500","Descrip":"AB液质租赁 AB QTRAP 5500 用于复杂基质样品分析,定量分析敏度比较高的三重四极杆串联质谱仪。 SCIEX Triple Quad™ 5500AB液质联用仪系统具有宽的定量线性动态范围,定量分析敏度,适合做复杂基质样品中低浓度组分的定量分析,对小分子化合物进行定量分析时,可提供数据准确性和重现性。","CompanyName":"北京合木科技有限公司","CompanyID":"132726","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"1","City":"北京市","Address":"北京市","PropertysValue":"","HitNumber":"96","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171527","StandUrl":"/st132726","UpdateTime":"2024/3/29 0:07:56","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102860630","UserID":"145715","PriceType":"0","PictureID":"1787538","CompanyTypeID":"5","Tag":"","LinkMan":"官经理","TelPhone":"","ClassName":"其他","ComProduct":"仪器租赁,岛津,安捷伦,色谱,质谱","BrandNameCH":"","IsShow":"2","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"5108","MarketUpdateTime":"","CreateTime":"2023/11/25 13:44:15","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"18515675067"},{"ID":"2725925","Picture":"00450ea57bc9bc7dfca4a5fb40d1e7fc18809dd54f9da3461d9c93bc85b6b968ef5650256cc211b4.jpg","PictureDomain":"img49","Name":"高通量研磨仪生产","Type":"","Descrip":"研磨仪是实验室样品制备常用工具,它通过碳化钨小球或不锈钢小珠在样品管内来回震荡实现样本的粉碎、混合、均化以及细胞破碎等。","CompanyName":"深圳市新锐科技发展有限公司","CompanyID":"129310","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"214","City":"深圳市","Address":"深圳市","PropertysValue":"","HitNumber":"67","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171523","StandUrl":"/st129310","UpdateTime":"2024/3/29 0:03:03","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102725925","UserID":"142299","PriceType":"0","PictureID":"1687101","CompanyTypeID":"5","Tag":"","LinkMan":"李虹雯","TelPhone":"400-966-2881","ClassName":"其他","ComProduct":"全自动均质仪,全自动分散机,全自动匀浆机,组织研磨仪,高通量组织研磨仪,全自动浓缩仪,全自动氮吹仪,粉碎机","BrandNameCH":"","IsShow":"1","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"16142","MarketUpdateTime":"","CreateTime":"2015/6/8 1:42:42","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"13560735719"},{"ID":"2961618","Picture":"5eceadd4559dcfd210fb49469bfaf5f2176dd7a1a07811566b30ded9689d01c3b1a28bb22be6bdd4.png","PictureDomain":"img70","Name":"销售电动截止阀报价","Type":"j941h-16/25 /64 dn","Descrip":"开关法兰型电动截止阀由电动执行机构和截止阀两部分组成。阀在管路中主要用来做切断、分配和改变介质的流动方向,一般不做调节使用,因为调节时不平衡力太大,对阀芯的冲蚀比较厉害。适用给排水、石化、冶金等压力较高的场合。阀体材料品种齐全,填料、垫片可根据实际工况或用户要求合理选配,能适用于各种压力、温度及介质工况。","CompanyName":"上海湖泉阀门集团有限公司","CompanyID":"129577","MarketPrice":"0","PsOrder":"0","PgID":"110","MaxOrder":"0","CityID":"3","City":"上海市","Address":"上海市","PropertysValue":"","HitNumber":"14","FrontShow":"0","IsCharges":"1","Year":"1","StarNum":"1","UpdateAndClientSort":"51171522","StandUrl":"/st129577","UpdateTime":"2024/3/29 0:02:46","TodayIsUpdate":"1","AttType":"0","AttState":"3","AttAddType":"3","IsSeoCreate":"0","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"21002","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"1020000","HasPicSort":"102961618","UserID":"142566","PriceType":"0","PictureID":"1708197","CompanyTypeID":"5","Tag":"","LinkMan":"党经理","TelPhone":"13564775333,","ClassName":"其他","ComProduct":"电动执行器,电动闸阀,电动球阀,电动蝶阀,电动截止阀,电动调节阀,气动调节阀,阀门电动装置","BrandNameCH":"","IsShow":"1","MarketPrice2":"0","RetailPrice":"0","ComHitnumber":"13087","MarketUpdateTime":"","CreateTime":"2024/3/29 0:02:46","Flag":"1","PackageName":"营销宝会员","ClientSort":"0","CsName":"","Reprint":"2","FeedBackMsg":"","EnUrl":"","MobilePhone":"13564775333"}]