摘要
在有机养殖模式和常规养殖条件下,笔者对扣蟹养殖池水环境的变化进行了比较研究。研究发现,温度、溶解氧、PH值无明显变化,CODMn、无机氮、磷酸盐和硫化氢含量方面有机养殖池均比常规养殖池有不同程度的降低。有机养殖在提高养殖品种品质的同时,还降低了水环境污染,是今后解决水产养殖对农业面源污染的有效途径之一。
Compared with the freshwater quality change in organic and conventional larval crab farming system, the results indicates that the varieties of temperature （T）, pH and dissolve oxygen （DO） are almost the same, but CODMn, inorganic nitrogen （nitrate ＋ nitrite ＋ ammonium）, inorganic phosphorus and sulfide （count with S^2- ） levels in organic fanning system are lower than that of conventional system. Organic aquaculture, not merely improves the quality of larval crab, reduces freshwater pollution at the same time, will be one of the effective ways to solve the non - point source pollution in the agricultural area in the future.
基金
江苏省科技攻关项目
项目编号:BE2003310
关键词
河蟹
扣蟹
有机水产养殖
水环境
污染
Chinese mitten crab
larval crab
organic aquaculture
freshwater
pollution
