摘要
在2007年-2008年通过底层微孔曝气技术的开发应用,开展了河蟹池塘养殖增氧研究。结果表明养成河蟹规格和单产显著提高,池底增氧技术是河蟹池塘养殖中的关键控制技术,示范区、推广区河蟹的平均规格、单产、毛利比同期常规技术的一般平均水平分别提高了11.37%~36.26%、7.07%~28.49%;50.29%~71.67%、49.11%;177.51%~187.31%、122.2%;养蟹池塘水体DO、NH3-N、NO2-N、TN、TP、COD等主要水质指标明显优于对照池,总体达到地表水环境质量标准(GB3838-2002)Ⅲ类以上,并实现了养殖期内零排放,是一项节水、环保的新型水产养殖技术。
The reserch of crab was developed in 2007-2008 through technique of oxygen enhancement by micropore on bottom of culture pond.The results indicated that the technology can increase the average specification, output of culture pond and aquaculture profit. The index DO, NH3-N, NO2-N, TN, TP, COD of water body in crab pond was superior obviously to contrast pond.The technique achieved zero emission in aquaculture course, was a watering and enviormental technology.
出处
《水产养殖》
CAS
2009年第4期8-14,共7页
Journal of Aquaculture
基金
江苏省水产三项工程项目(PJ2007-3)
关键词
河蟹
养殖
池塘底层
微孔曝气
增氧技术
river crab
the bottom of pond
mieropore aeration
the technology of oxygen enhancement