加装集污装置对水库投饵网箱养殖框鳞镜鲤生长及氮、磷排放的影响  

Effects of the manure collection equipment on growth performance and nitrogen and phosphorus budgets of Cyprinus carpio var.specularis cage culture in reservoir

作　　者：王涛[1] 单世涛 杨超[1] 吴宗文 陈章 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100 [2]安康市金诺水产公司,陕西安康725000 [3]通威股份有限公司,四川成都610041

出　　处：《水产学报》2016年第2期218-224,共7页Journal of Fisheries of China

基　　金：西北农林科技大学推广专项(Z222021214)~~

摘　　要：为降低投饵网箱养鱼氮、磷排放对水库水体的影响,探求生态网箱养殖模式,以体质量为(167.81±34.66)g的框鳞镜鲤幼鱼为研究对象,对加装集污装置的网箱与传统网箱养殖框鳞镜鲤的生长情况和氮(N)、磷(P)的输入和回收情况进行了比较实验。结果表明:集污网箱框鳞镜鲤的生长性能明显优于传统网箱,加装集污装置对框鳞镜鲤的存活率无显著影响。集污网箱和传统网箱中N的回收率分别为76.83%和44.14%,P的回收率分别为63.13%和35.18%,2组网箱间差异极显著;集污网箱和传统网箱中N的利用率分别为28.36%和25.57%,P的利用率分别为21.30%和18.25%,集污网箱中N、P的利用率均高于传统网箱且差异显著;投饵网箱加装集污装置后减少了氮、磷向水库水体的排放,减轻了网箱养殖对环境的富营养化影响。Cyprinus carpio var. specularis with body weight of（167.81±34.66） g was reared in a net cage of 5.0m×5.0 m×2.0 m without（as a control group） and with the manure collection equipment（as a treatment group）at a stocking rate of 40 individuals/m2 at water temperature of 22~32 °C, p H value of 6.8~7.5 and dissolved oxygen level upon 5.0 mg/L for 90 days to evaluate the input and recycle of nitrogen and phosphorus in the cage water.The results showed that the growth performance in the cage with the manure collection equipment is superior to that in the control cages, and adding the manure collection equipment had no significant effect on survival ratio（P 〈0.05）. The recycle rate of nitrogen was found to be 76.83% in the cage with the manure collection equipment and44.14% in the control cage with very significant difference（P 〈0.01）. The recycle rate of phosphorus was 63.13%in the cage with the manure collection equipment and 35.18% in the control cage with very significant difference（P 〈0.01）. There were higher utilization efficiencies of nitrogen（28.36%）, and phosphorus（21.30%） in the cage with the manure collection equipment than those（25.57% for nitrogen, and 18.25% for phosphorus）, with significant difference（P 〈0.05）. Emissions of nitrogen and phosphorus were reduced to the reservoir water by adding the manure collection equipment to feeding-cage, and the eutrophication effect of cage culture on the environment was decreased.

关 键 词：框鳞镜鲤 集污装置 投饵网箱 生长 氮、磷排放 

分 类 号：S964[农业科学—水产养殖]